fix function rename
reimplement partial, because lodash way seems too convoluted to be right
tweak desktop example css
micro perf
who needs lodash.clone
what about lodash.contains. Who seriously needs that?
publish 1.2.2
more configuration
always show dest on over
add api.setCheck, normalize ctrl/api, improve render on RAF
remove animation try/catch
highlight.dragOver setting
expose board functions
split and expose drag logic to allow things like spare pieces