Add explicit #start/#halt/#connect/#disconnect methods
WIP on standardize callbacks.
Updated to use standardize callback params.
Fix tests with new callback format
Merge pull request #35 from hybridgroup/standardize-callbacks

Standardize callbacks
Merge remote-tracking branch 'origin/fix/c-c-changes' into dev

* origin/fix/c-c-changes:
  Add explicit #start/#halt/#connect/#disconnect methods

Conflicts:
	lib/ir-range-sensor.js
Bump version to "0.19.0"