Merge pull request #97 from tenach/master

message_filter() now available to tap into
Merge pull request #98 from tenach/master

fixing typo.
Merge pull request #100 from tenach/master

fixing travis
Merge pull request #101 from tenach/master

test.
Merge pull request #102 from tenach/master

testing Travis.
Merge pull request #103 from tenach/master

Fixing wording.