fix a crash

Merge pull request #3 from ksonney/master

Fix for AttributeError: 'list' object has no attribute 'get'

Added start/stop feature

Update README for limit shortcut key

Added tags column

Change filter => limit (keys: f => l)

Fix handling of ids

Refactored stuff into Task model

Broke stuff into modules

Fixed tasnote

Change filter behavior

Fixed format interpolation

Make commands run silently (prevents flashy nasties)

Added chmod for tasknote