adding tile map vis type
Merge branch 'master' into feature/tilemap
adding mapquest plugin for tilemap
added mapbox, tilemap vis type, circle markers
fixed conflicts with master to temporarily disable binding events in handler and events in _chart so tilemap can work
[vislib/tooltip] improve placement logic to consider viewport
[vislib/tooltip] more teasing, get sizing from a clone
[vislib/tooltip] tests
[vislib/tooltip] fix tests
[vislib/tooltip] the viewport does not always start at 0,0
[vislib/tooltip] generalize calculation of bounds
[vislib/tooltip] requery the DOM for tooltip el
save
almost there
added heatMap, markerCluster and circleMarkers to tile maps
troubleshooting
troubleshooting
more changes, experimenting
working thru the issues
added quantizeColors option and revised other tilemap options