fix rules for italics emphasis

while the last patch did stop /path/.xxx from turning italic, it also
stopped any other /emphasis/ from becoming italic. correct this by
testing for ispunct, so spaces are valid italic terminators
Removed the default autojoin channels

Removed the default autojoin channels.
Merge pull request #112 from ailin-nemui/italics-exception

fix rules for italics emphasis
Updated the documentation for LIST

Updated the documentation for LIST.
Fixed a typo in the cmdmax argument

Fixed a typo in the cmdmax argument.