remove the separate method contains(), it does not offer enough sugar, just duplicatd...
tree33c1ddd2f2027b7540a3d0b34ece6e88b1943254
-rw-r--r-- 152 .gitignore
-rw-r--r-- 128 Changes
-rw-r--r-- 385 MANIFEST
-rw-r--r-- 130 MANIFEST.SKIP
-rw-r--r-- 4731 Makefile.PL
-rw-r--r-- 1132 README
-rw-r--r-- 37818 Todo
drwxr-xr-x - bin
drwxr-xr-x - lib
drwxr-xr-x - t