cleanup and upload fixing
locking but no interface yet
hotkeys
multiple image selection, transparency, deselection, some work on ordering, lookin rad
fixed demo link in README
option to set $L.img_dir
initial udateTransform triggering
locking done better during initialize but still suffering from upstream Leaflet bug -- see #5
separating transparency and opacity
image hide and image isolate #6
onSelect and onDeselect handling, selects new image & deselects others
selecting, ordering, planning
Major refactoring: Move image overlay editing into DistortableImage.Edit class, prune, move matrix utility methods into Util.Matrix, and do mass cleanup for jshint (mostly semicolon insertion).
Update test configuration (add missing karma-mocha-reporter dependency and new src files).
Move matrix calculations into DistortableImageOverlay#_calculateProjectiveTransform and rename #distort to #_reset to conform with Leaflet's ImageOverlay method names.
Update example to work with latest changes.
Add first test for DistortableImageOverlay.
Extend L.DomUtil with functions for constructing CSS transform strings.
Work on getting simple projection code to work.
Add tests for MatrixUtil methods.