release 0.11022

[dbsrgits/SQL-Translator.git] / Changes

Changes for SQL::Translator

0.11022 2017-12-04

 * Add support for monotonically increasing SQLite autoincs (GH#47)
 * Add support for CHECK constraint in SQLite producer (GH#57)
 * Add support for CHECK constraint in POD producer (GH#63)
 * Fix forgotten quoting in the MySQL DROP TABLE diff producer (GH#50)
 * Fix Pg grammar parsing of UUID, time, timetz columns (RT#100196, GH#52)
 * Add support for USING and WHERE on indexes in PostgreSQL producer
   and parser (RT#63814, GH#52)
 * Improve add_trigger consistency between producers (GH#48)
 * Add trigger 'scope' attribute support to JSON, YAML and XML producers,
   and XML and SQLite parsers (RT#119997)
 * Declare dependencies in deterministic order (RT#102859)
 * Multiple speedups of naive internal debugging mechanism (GH#54)
 * Remove dependency on List::MoreUtils ( http://is.gd/lmu_cac_debacle )
 * Fix parsing of strings with leading whitespace for MySQL, Oracle, PostgreSQL,
   SQLServer and SQLite
 * Fix parsing of MySQL column comments (RT#83380)
 * Fix multi-line comments in YAML, JSON and PostgreSQL producers
 * Fix identifier quoting in PostgreSQL diff producer
 * Fix incorrect type conversion from various BigInt AutoIncrement to the
   PostgreSQL-specific bigserial (GH#72)
 * Fix missing semicolons between PostGIS statements
 * Fix string and identifier quoting in PostGIS statements
 * Fix intermittent test failures (RT#108460)
 * Fix relying on exact serialisation for JSON/YAML tests (RT#121901)

0.11021 2015-01-29

 * Fix Oracle producer generating an unnecessary / at the end in case there
   are no triggers
 * Skip HTML tests if CGI is not installed (RT#98027)
 * Fix JSON and YAML tests if the defaults have been tweaked (RT#98824)
 * Fixes for parsing and producing identifiers and values that need
   quoting and escaping for SQLite, MySQL, PostgreSQL, SQLServer and
   Oracle (RT#90700, RT#31034)
 * Add support for ALTER TABLE ... ADD CONSTRAINT to Oracle parser
 * Add trigger support to Oracle parser (RT#62927)
 * Fix erroneous PostgreSQL floating point type translations (RT#99725)
 * Remove executable bit from Parser/JSON.pm (RT#100532)
 * Update the Free Software Foundation's address (RT#100531)
 * Provide default index names for SQLite (GH#45)
 * Fix SQLite diffing on perl 5.8.1
 * Fix multi-column indexes in Parser::DBI::PostgreSQL
 * Fix array data types in Parser::PostgreSQL (GH#49)
 * Fix multidimensional sizes in Parser::PostgreSQL

0.11020 2014-09-02

 * Fix test failure if Test::PostgreSQL is installed but not working

0.11019 2014-09-02

 * Add Json and hstore types to Pg Parser (cloudinstustrie)
 * Fix DROP TABLE in SQL Server Producer
 * Fix Pg DBI parser test (Dagfinn Ilmari Mannsåker)
 * Remove spurious warnings (Matt Phillips, Wallace Reis)
 * Fix MySQL producer for columns with scalar ref in 'ON UPDATE' (Wallace Reis)
 * Fix handling of views in MySQL DBI parser
 * Fix handling of renamed fields in SQLite diff (Peter Mottram)
 * Check numeric equality of default values in numeric-type fields (Wallace Reis)
 * Fix handling of renamed fields in renamed tables in Pg diff (Peter Mottram)

0.11018 2013-10-31 🎃

 * Revert "Fix AUTOINCREMENT in SQLite"

0.11017 2013-10-30

 * Apply quotes to fix tables that are reserved words, DBI::SQLServer (Jonathan C. Otsuka)
 * Add DECIMAL_DIGITS to field size for scale info, DBI::SQLServer (Jonathan C. Otsuka)
 * De-linkify XML namespace in docs (RT#81838)
 * Allow both single and double quotes for values in MySQL parser
 * Fix diff for altering two things per column - add ; at the end
 * Call all diff methods in list context (it can be merged later)
 * Fix Pg diff issue with drop constraint on primary keys
 * SQLite support for SET NULL, SET DEFAULT and NO ACTION in FK clauses
 * Clean up properly after Parser::DBI::PostgreSQL tests
 * Fix typos in error messages
 * Add SQL_TINYINT and SQL_BIGINT to the type map in
   SQL::Translator::Schema::Field
 * Add JSON parser and producer (Jon Jensen)
 * Clean up TTSchema doc some (Gavin Shelley)
 * Fix AUTOINCREMENT in SQLite (Rafael Porres Molina)

0.11016 2012-10-09

 * Allow passing an arrayref to SQLT->filename (lost in Mooification)

0.11015 2012-10-05

 * Fix stupid missing version number in SQL::Translator::Schema::Object

0.11014 2012-10-05

 * Relicense under Perl 5 terms

0.11013_03 2012-09-25

 * Remove SQL::Translator::Schema::Graph as announced in 0.11011
 * Remove a number of no longer needed deps

0.11013_02 2012-09-23

 * Fix missing dep (List::MoreUtils)

0.11013_01 2012-09-22

 * Convert SQL::Translator, ::Schema and ::Schema::* to Moo
 * Fix leaks by weakening circular references between schema objects

0.11013 2012-09-22

 * Make MySQL producer add NULL after every nullable field, conforming to SQL
   standard, and avoiding MySQL bugs

0.11012 2012-07-02

 * Fix/update quoting in PostgreSQL producer
 * Add missing quote function to SQLServer producer
 * Fix incorrect Parser::DBI documentation (RT#60878)

0.11011 2012-05-09

[ INCOMPATIBLE CHANGES ]

 * SQLT no longer supports setting separate conflicting values for the now
   deprecated 'quote_table_names' and 'quote_field_names'. Instead their values
   are proxied to the new 'quote_identifiers'. If 'quote_identifiers' is
   supplied, the legacy settings are ignored (with a warning). If nothing is
   specified the default is TRUE as before. If only one is specified - default
   to its value for everything, and if both are specified with a conflicting
   value an exception is thrown.

 * Partial quoting support has been added in SQLite. It is currently disabled by
   default, you need to request is explicitly with quote_identifiers => 1. In a
   future version of SQL::Translator *THIS DEFAULT BEHAVIOR WILL CHANGE*.
   If you do NOT WANT quoting, set quote_identifiers to a false value to
   protect yourself from changes in a future release.

 * Bump the default MySQL parser version to MySQL 4.0

[ OTHER CHANGES ]

 * script/sqlt-graph now accepts a --trace option
 * Fixes to SQLite foreign keys production (patch from Johan Viklund)
   closes RT#16412, RT#44769
 * ON DELETE/UPDATE actions for SQLite (patch from Lukas Thiemeier)
   closes RT#70734, RT#71283, RT#70378
 * Fix data preservation on SQLite diffs involving adding/dropping columns
 * Support for triggers in PostgreSQL producer and parser
 * Correct Data Type in SQLT::Parser::DBI::PostgreSQL (patch from Andrew Pam)
 * Fix index issue in SQLT::Parser::DBI::PostgreSQL
 * Add column and table comments in SQLT::Parser::DBI::PostgreSQL(patch from Andrew Pam)
 * Stop the DBI parser from disconnecting externally supplied DBI handles (RT#35868)
 * Fixed alter_drop_constraint for foreign keys and applying multiple changes
   via alter_field to a column in Postgres Producer
 * Added a working mechanism for naming foreign keys in the PostgreSQL producer
 * Fix PostgreSQL ignoring default values with specified data type
 * Fix PostgreSQL parser support for (N)::int defaults (patch by Tina Müller)
 * Fix possible name duplication in SQLlite producer
 * Oracle does not accept ON DELETE/UPDATE RESTRICT (though it is the actual default)
   fix by not adding the ON DELETE/UPDATE clause at all
 * Changed dependency on Digest::SHA1 to the core-bundled Digest::SHA (RT#67989)
 * Support for double quoted and bit strings as default values in MySQL parser
 * Improved VIEW support in MySQL parser
 * Proper handling of CURRENT_TIMESTAMP default values in MySQL parser (RT#65844)
 * Check in MySQL parser to avoid trying to parse a table defined twice in the same
   file as indices (and probably other things) get messed up
 * Workaround for some MySQL quirks on primary key definitions
 * Fix dropping primary keys in MySQL diffs (RT#62250, patch from Nick Bertrand)
 * MySQL producer does not attempt to write out non-existent unique constraint names
 * MySQL parser correctly differentiates between signed and unsigned integer column
   display sizes
 * Replace Class::Accessor::Fast dependency with already-included Moo
 * Entire codebase is now free of tabs and trailing whitespace
 * Spellfixes (RT#68912)
 * Fix Diagram Producer POD (RT#71397, RT#71398)
 * Fix Diagram Producer to use correct binmode on output (RT#71399)
 * Fix ignored option to script/sqlt-diagram (RT#5992)
 * Fix t/17sqlfxml-producer.t failures due to whitespace differences introduced by
   environment config snippets (RT#70786)
 * Fix assembly of Table objects with numbered columns being added out of order
   (RT#74771) (based on patch from Jonathan Otsuka)
 * Fix syntax error in SQL::Translator::Producer::Latex (RT#74953)
 * Deprecate SQL::Translator::Schema::Graph and the as_graph() schema method
 * Bump minimum supported perl version to 5.8.1 (mostly due to Moo)

0.11010 2011-10-05

 * Add "if exists" to drop view statements in Pg.

0.11009 2011-09-02

 * Fix MySQL producer to properly quote all table names on output (patch from geistteufel)

0.11008 2011-05-04

 * Correctly create and parse FK constraints in SQLite
 * Correct postgis geography type insertion and linebreak fix for multiple geometry/geography columns
 * made PostgreSQL producer consistent with other producers in terms of
   quoting and allowing functions in constraints and indices
 * Add distinction of autoinc and regular primary keys to the GraphViz producer
 * Fix odd invocation of Test::More::pass() in t/36-filters.t (RT#64728)
 * Quote everything in SQL Server
 * Turn off constraints before dropping tables in SQL Server
 * Make true unique constraints if needed in SQL Server
 * Fixed Producer::PostgresSQL to output array type after type size,
   i.e. varchar(64)[] rather than varchar[](64)

0.11007 2010-11-30

 * Fix POD typo in SQL/Translator/Schema/Trigger.pm
 * Add explicit Scalar::Util to the deplist for really old perls
 * Add support for PostGIS Geometry and Geography data types in the Pg producer
 * Some minor fixes to squash warnings on new perls
 * Support a custom_type_name hint when creating enum types in PostgreSQL
 * Fix sqlt options/pod mismatch (RT#58318)
 * Oracle Producer multicolumn constraint support
 * Add support for triggers in the MySQL producer
 * Fix unstable order of View's in MySQL parser

0.11006 2010-06-03

 * Fix Producer::Oracle varchar2 without size def (ORA-00906: missing right
   parenthesis)
 * Fix Producer::Oracle translate float and double to float instead of number
 * Fix Producer::Oracle generation of too long unique constraint names
 * Fix Producer::SQLite when generating VIEWs with add_drop_table => 1
 * Fix Producer::MySQL not quoting index names when requested (RT#56173)
 * Fix Producer::MySQL wrapping extra ()s around VIEW SELECT-ors (RT#56419)
 * Fix Field::default_value to behave like a real accessor (allow undef as
   an unsetting argument)
 * Fix Mysql/Pg/SQLite/MSSQL producers to properly *not* quote numeric default
   values (RT#57059)
 * Producer::Oracle tests now use Test::Differences
 * Prettify output of SQLite producer (less bogus newlines)
 * Augment SQLite and Pg producers to accept a perl-formatted (%d.%03d%03d)
   and regular no-leading-zero (X.X.X) *_version producer args

0.11005 2010-02-24

 * Fix Parser::DBI::Oracle reading too many tables (RT#49413)
 * Fix Parser::MySQL tripping up on PRIMARY KEY ... USING (currently value is ignored) (RT#50468)
 * Fix runaway debug trace (RT#52276)
 * Fix Parser::PostgreSQL choking on commit; statements in DDL (#RT52277)
 * Producer::Oracle now respects quote_field|table_names, and
   no longer does name munging of reserved table names
 * Producer::Oracle now correctly outputs databse-unique index names

0.11004 2010-02-14

 * Fix PG producer numeric precision regression (RT#49301)
 * Add DB2 producer numeric/decimal precision output
 * Fix Oracle producer creating numeric precision statements that the test case expects (no whitespace)
 * Add Oracle producer creating drop view statements like PG producer does
 * Fix SQL::Translator::Diff to use producer_args instead of producer_options

0.11003 2009-09-28

 * Pg parser fixes to deal properly with MATCH <type>
 * Pg parser fixes to parse timestamp attributes correctly
 * Fix broken default detection in script/sqlt (RT#27438)
 * Fix dependency issues with LibXML and TT

0.11002 2009-08-30

 * Depend on fixed Parse::RecDescent
 * Added skip-tables and skip-tables-like options to Diagram

0.11001 2009-08-18

 * Removed last use of Readonly
 * Adjusted YAML dependency

0.11000 2009-08-18

 * Re-add version numbers to files, else cpan's "upgrade" gets very confused
 * Replaced code using Readonly, since most of the rest uses constant, and thats already a dep
 * Moved YAML and XML::LibXML back to recommends, the tests for both now skip if not installed
 * Bumped to 0.11000 to supercede 0.10 which has incorrect numbering scheme

0.10 2009-08-13

 * Resolved the following RT bugs (thanks to everyone for reporting!):
   - 25791   does not recognize PostgreSQL ON_ERROR_STOP
   - 29265   sqlt-diagram: --natural-join needs Graph::Directed
   - 37814   SQLite translator failing to parse schema
   - 42548   Producer::PostgreSQL incorrectly inserts the size in
             'time(stamp)? with(out) time zone' fields
   - 43173   SQL::Translator::Parser without versionnumber - will install
             old 0.09002
   - 46805   (No subject)
   - 47026   META.yml is not packaged due to MANIFEST.SKIP (easyfix)
   - 32130   Move from XML::XPath to XML::LibXML::XPathContext
   - 22261   MySQL parse
   - 13915   missing optional prerequisite cause make test to fail
   - 8847    Diagram.pm: BINMODE missing in printing of graphic file.
   - 21065   GraphViz producer fails on tables named 'node'
   - 35448   Producer::PostgreSQL types without size
   - 22026   sqlt-diagram uses -f arg twice
   - 47897   [PATCH] Fix uninitialized value within @_ in (uc|lc)
   - 47668   Mysql Parser doesn't recognize key types
   - 46448   sqlt-graph errors out on MySQL DDL with btree keys
   - 47176   Add Foreign Key support to Parser::DBI::PostgreSQL.pm
   - 48025   MySQL Producer: Case inconsistency between elements in
             @no_length_attr and $data_type
   - 48569   sqlt-diagram fails to load SQLite schema
   - 48596   SQL::Translator::Diff::schema_diff should produce a list in
             list context
   - 44907   SQL::Translator::Producer::PostgreSQL produce() in list context
             should return a list of statements

0.09007 2009-06-25

 * Fixed Pg parser - caching the compiled P::RD schema is a *very*
   bad idea
 * Fix MSSQL handling of ON UPDATE/DELETE RESTRICT
 * Delay MSSQL FK constraint deployment until after all CREATE TABLE
   statements
 * Coerce other engine's bytea/blob/clob datatypes to VarBinary

0.09006 2009-06-10

 * Multiple test and dependency adhustments to make smokers happy
 * Fix YAML producer wrt extra attribute
 * Added support for "time(stamp) (p) with time zone" for Pg producer (mo)

0.09005 2009-06-08

 * Add parser support for MySQL default values with a single quote
 * Properly quote absolute table names in the MySQL producer
 * Added CREATE VIEW subrules for mysql parser (wreis)
 * Many fixes to code and tests for trigger's "database_events"
 * Added semi-colon for (DROP|CREATE) TYPE statements in the Pg producer (wreis)
 * ALTER TABLE/ALTER COLUMN/DROP DEFAULT support in Pg producer (mo)
 * XML parser support for multi-event triggers
 * SQLite producer support for multi-event triggers
 * XML parser switched from XML::XPath to XML::LibXML
 * Pg producer ALTER TABLE/COLUMN and DROP DEFAULT support
 * MySQL producer skips length attribute for columns which do not support that
   attribute. Currently following column types are added to that list:
   date time timestamp datetime year
 * Switch to Module::Install (mandates minimum perl 5.005)
 * Major cleanup of GraphViz proucer
 * Massive amount of fixes to SQLite/Pg/Mysql/MSSQL parsers/producers
   Fix most of the problems uncovered by the roundtrip test framework
   Some highlights:
    - Rewind exhausted globs before attempting a read
    - Do not add xml comment header if no_comments is set
    - table/field counts are held per schema object, not globally
    - no more variable table and column names in SQLite and MSSQL
    - VIEW support for Pg parser, also some cleanups
    - The way we generate Pg create view statements was not standards compliant
      (per RhodiumToad in #postgresql)
    - Disable MSSQL view/procedure production - they never worked in the first place
    - SQLite/MSSQL improvements:
      - Support parsing of all DROP clauses
      - Support parsing of field-level comments
      - When producing do not append table names to constraint/index names

0.09004 2009-02-13

 * Add support for temporary tables in Pg (nachos)
 * Create Trigger support for SQLite
 * GraphViz producer improvements

0.09003 2009-02-07

 * <BORKED RELEASE DELETED OFF CPAN>

0.09002 2008-12-05

 * parsing MySQL CURRENT_TIMESTAMP as scalar ref so it can be produced without
   quotes (jgoulah)
 * Add ignore_opts parser arg (to ignore table options) in Parser::MySQL (jgoulah)
 * Skip tests for buggy Spreadsheet::ParseExcel versions (rbo)
 * Add support for skip tables parser arg in Parser::DBI::MySQL (jgoulah)
 * Changed behaviour of ::Producer::Oracle when returning an array of statements
   to make it compatible to DBI->do()
 * Fixed a few bugs in ::Producer::Oracle
 * Applied patch from jgoulah to support mysql's MERGE option
 * Applied patch from rbo to add support of multiple database events on a trigger
 * Applied patch from lukes to allow drop if exists in sqlite producer, with
   version >= 3.3
 * Applied patch from rjbs with minor changes, now we support scalar refs in
   default values!
 * Fixed SQLite producer to end index statements in newlines, in scalar context
 * Decreed that all list context statements shall not end in ; or ;\n
 * Fixed SQLite, Diff and MySQL producers to agree with Decree.
 * Added support for CREATE VIEW + tests in the Pg producer (wreis)
 * Added support for CREATE VIEW + tests in the sqlite producer (groditi)
 * Added proper argument parsing and documentation to MySQL Parser and
   Producer (ribasushi)
 * Using DROP VIEW instead of OR REPLACE clause in the Pg producer, as replace
   only allows replacement with identical set of columns (wreis)
 * Added support for DROP VIEW and fixed CREATE VIEW statement in the sqlite
   producer (wreis)
 * Removed source_db and target_db accessors from Diff (throwback to old version,
   only output_db is used)
 * Support for longer varchar fields in MySQL

0.09001 2008-08-19

 * Added support for CREATE VIEW + tests in the mysql producer (groditi)
 * Added support for SET fields in the mysql producer + test (groditi)
 * Added support for proper booleans in the mysql producer, when a mysql version
   of at least 4.x is supplied
 * Added support for proper enums under pg (as of 8.3), with pg version check,
   and deferrable constraints
 * Added support to truncate long constraint and index names in the mysql
   producer, because of a change to DBIx::Class to produce such long names in
   some cases.

0.09000 2008-02-25

 * Fix Pg produces idea of which field types need a size param (wreis)
 * Add support for COLLATE table option to MySQL parser
 * Allow DEFAULT CHARACTER SET without '=' (as produced by mysqldump)

0.0899_02 2008-01-29

 * Major refactoring of SQL::Translator::Diff again:
 * Diff is no longer one huge monolithic function.
 * Added more tests for diff
 * When producing diffs for MySQL you will (by default) get single alter
   statements per table
 * SQLite can also do remove columns (by creating a temp table as shown in
   http://sqlite.org/faq.html#q11
 * Columns can be renamed if the new schema is from a form that can have metadata
   (which is pretty much anything but an SQL file.) It does this by looking at
   renamed_from in the $field->extra
 * Updated Oracle and Postgres producers
 * More tests!

0.0899_01 2007-10-21

 * SQL::Translator::Diff now uses the ::Producer modules to create diffs
   This *will* break back-compatibility
   Use sqlt-diff-old for the previous one, and fix producers!

0.08001 2007-09-26

 * Patched to ignore all TT versions >= 2.15 until TT is fixed :(

0.08 2006-12-07

 * Patched 18ttschema-producer.t and 33tt-table-producter.t to skip on TT 2.15,
   thanks Ash!

0.08_04 2006-11-10

 * Patched MySQL producer to name constraints sanely, thanks Ash
 * Added patch to Producer::DB2 to avoid dependency issues with foreign keys
 * Added patch to remove single quotes for numeric default values in Producer::DB2
 * Fixed Parser::SQLite to require a semicolon after a create trigger statement
 * Added patch from avinash to add CASCADE to pg table drops

0.08_03

 * Added patch to use default values for Pg timestamp fields

0.08_02    2006-11-03

 * Added patch from Ash to separate DROP statements in mysql producer in
   list-context
 * Fixed up SQLites usage of no-comments

0.08_01    2006-07-23

 * Made Trigger check that a give table exists in on_table - castaway
 * Split some producers (DB2, MySQL, SQLite, PostgreSQL) into sub methods (others
   to follow) - castaway
 * Add alter_* methods to some Producers and docs to Producer.pm (for use by Diff
   later) - castaway
 * Made changes to allow producers to return a list of statements - castaway
 * Split sqlt-diff into script and module - castaway
 * Added quote_table_names and quote_field_names patch (omega, zamolxes) - castaway
 * Added DB2 Producer - castaway
 * Added mysql_character_set for 4.1+ -mda
 * New filters, Names and Globals. -mda
 * Added the initial work on a template based Dia UML producer. -mda

0.07    2005-06-10

 *   YAML parser supports extra attributes on tables.
 *   All schema objects now support the extra attribute, so can
     have arbitary name/value data attached to them.
 *   Refactoring: Added SQL::Translator::Schema::Object - base
     class for all Schema objects.
 *   Changes to MySQL Parser (Dave Howorth)
    - ignore INSERT statements
    - permit ALTER TABLE ADD FOREIGN KEY
    - allow trailing comma on last field in CREATE statements
    - collect the database name
 *   TTSchema Producer
    - Can pass extra variables using tt_vars producer arg.
    - Can pass extra config using tt_conf producer arg.
    - Variables and config can be passed on the command line
      with --tt-var and --tt-conf options to sqlt.
 *   Added schema filters.
 *   MySQL Producer
    - Added 'mysql_table_type' extra attribute on tables.
    - Works out InnoDB tables from constraints.
    - mysql_charset and mysql_collate extra attributes for tables and fiels.

0.06    2004-05-13

 *   Added SQL::Translator::Manual
 *   Installation process now uses Module::Build
 *   Added new "Dumper" producer
 *   Changed the native SQL Fairy XML format to a fixed mapping.
     *NB:* You should convert your existing XML schema. See the
     SQL::Translator::Parser::XML::SQLFairy docs.
 *   Added producers: TT::Base and TT::Table.

0.05    2004-02-27

 *   Added "COMMENT ON *" syntax to PostgreSQL parser
 *   Some fixes to Oracle parser as reported by Gail Binkley
 *   Added support in PostgreSQL parser for all "ALTER TABLE" statements
 *   Now distributing sqlt-diff script as it's pretty usable
 *   Added new options to sqlt-graph and GraphViz producer (Dave Cash)

0.04    2003-11-07

 *   Increased version of Constants module to 1.41 to avoid a problem
     where 0.02 has 1.4 of that file and 0.03 had 1.06 which confused
     CPAN
 *   Hard-coded all the PREREQ_PM modules in Makefile.PL (rather than
     setting them dynamically) so that automated tests would pass

0.03    2003-11-06

 *   Added parsers: XML::SQLFairy, Sybase, SQLite, DBI-MySQL,
     DBI-PostgreSQL, DBI-SQLite, DBI-Sybase, Storable, YAML
 *   Added producers: XML::SQLFairy, TTSchema, Storable, YAML
 *   HTML producer now uses stylesheets to allow easy customization of colors
 *   Many bug fixes to most every module
 *   Added "sqlt-dumper" script to help create a script for dumping
     a database a la "mysqldump"
 *   Reversed the arrowheads on the graphical producers to show the
     relationships in a more standard way
 *   Changes all included script names to start with "sqlt"
 *   Added capturing and printing most embedded table and field comments

0.02    2003-06-17

 *   Added parsers for Excel and Oracle
 *   Removed Sybase parser because it didn't actually work
 *   Added ClassDBI, Diagram, GraphViz, HTML, POD, SQLite, Sybase producers
 *   Added Schema classes to represent schema as objects
 *   Removed "Raw" producer in favor of the Schema classes
 *   Removed "Validator" class as the Schema classes validate themselves
 *   Improved all existing parsers and producers, expanding them to
     handle foreign keys much better, produce better output, etc.
 *   Added sqlt-diagram.pl and sqlt-graphviz.pl as CLI frontends to the
     graphical producers
 *   Added sql_translator.cgi as a web-form frontend to graphical producers
 *   Expanded test suite

0.01    2003-02-27

 *   Added parsers: XML::SQLFairy, Sybase, SQLite, DBI-MySQL,
     DBI-PostgreSQL, DBI-SQLite, DBI-Sybase, Storable, YAML
 *   Added producers: XML::SQLFairy, TTSchema, Storable, YAML
 *   HTML producer now uses stylesheets to allow easy customization of colors
 *   Many bug fixes to most every module
 *   Added "sqlt-dumper" script to help create a script for dumping
     a database a la "mysqldump"
 *   Reversed the arrowheads on the graphical producers to show the
     relationships in a more standard way
 *   Changes all included script names to start with "sqlt"
 *   Added capturing and printing most embedded table and field comments