POD

	modified:   lib/POE/Filter/IRCv3.pm
More correct prefix behavior

	modified:   lib/POE/Filter/IRCv3.pm
On second thought, a prefix of '0' is stupid.

Setting am empty-string prefix seems like a more common case to cope with.
Check ->{prefix} truthiness rather than defined.

	modified:   lib/POE/Filter/IRCv3.pm
v0.040001

  (0.40.1)
  Empty-string prefix should DWIM
  Switch to long-format semantic version