1.0.5
Implemented #9 Maintain state when rotate screen.
Fixed issue #17 Setting progress before view was drawn cause unexpected results
Fixed issue #16 Setting progress to 0 after indeterminate progress cause unexpected results
Fixed issue #19 Added methods `setBackgroundColor` and `setStrokeColor`
Fixed issue #21 Progress changes are ignored when the animations are running.
Added `cpb_colorDisabled` attribute, to change color when you call `setEnabled(false)` method.