remove test numbering

diff --git a/t/06-addsub.t b/t/addsub.t
similarity index 100%
rename from t/06-addsub.t
rename to t/addsub.t

diff --git a/t/01-basic.t b/t/basic.t
similarity index 100%
rename from t/01-basic.t
rename to t/basic.t

diff --git a/t/07-edge-cases.t b/t/edge-cases.t
similarity index 100%
rename from t/07-edge-cases.t
rename to t/edge-cases.t

diff --git a/t/02-extension.t b/t/extension.t
similarity index 100%
rename from t/02-extension.t
rename to t/extension.t

diff --git a/t/04-get.t b/t/get.t
similarity index 100%
rename from t/04-get.t
rename to t/get.t

diff --git a/t/03-io.t b/t/io.t
similarity index 100%
rename from t/03-io.t
rename to t/io.t

diff --git a/t/05-isa.t b/t/isa.t
similarity index 100%
rename from t/05-isa.t
rename to t/isa.t

diff --git a/t/10-synopsis.t b/t/synopsis.t
similarity index 100%
rename from t/10-synopsis.t
rename to t/synopsis.t