Merge branch 'release/1.0.5' into develop
[CS] CI build on ruby 2.0.0
[CS] Remove unused constants
[CS] Precompile a regex, and avoid another
[DOC] Doc format typo
[CS] Avoid another regex for performance
[FEATURE] Allow specifying an event mask when connecting

Will help to trim down the number of received events when we're only interested in a subset.

Fixes #2
[UPDATE] Bump to 1.1.0
[DOC] Changelog entries
Merge branch 'release/1.1.0'