This lists only the changes for the current release (v1.19) over the last
version, since CHANGES is now quite big:

* removed debug printout (oups)
* added __END__ for faster loading
* removed needless return statements for a trifle more speed
* added Math::String::Charset::Wordlist
* fixed a potential problem in Sequence as_array 
* fixed __PACKAGE in error messages to be actual class name
* 581 tests now (added wordlist tests)
