Bug fixes and Even More Improvements™

this year i resolve to keep better track of my changes

bugggggs

• z/_// will be correctly parsed now.
• stacktrace and message were swapped, oops
• ordering & global fall/rise for zsampa (#19)
• fix nareal fricatives (#22)

code improvements

• refactor to not use globals anymore for the bot itself (create class Conniebot)
• allow for extension commands (Conniebot.registerCommands)
• package restructuring - everything now under src/

other stuff

• more comments for better docs
• travis ci!