3D: smoothened pie edges
#3082 3d pie datalabels
3D Pie, hide/show/destroy
Fixed regression issue #3095, semi-transparent fills coming out as black in exports created by Batik.
Highstock: Fixed #3040 where the scrollbar would be mispositioned when setting the extremes of a chart outside the data range.
Internal improvement of slot visualization
3D Pie Animation
Fixed #1326 causing parts of candlesticks not to print from Chrome's printing dialog.
Fixed #3094 causing series Z index to change after Series.update.
#3090: default 3d options
Fixed #3098, plot area size of a pie chart not being recalculated after the legend size changed.
Added demo for Base64 marker symbols.
Fixed #3104, touch panning not being able to pan outside the data range even if the axis min and max options were outside the range.
Update read me
Update readme.md
Highmaps: Performance improvements. Added new US Counties map with online map source.
Highmaps: Speed improvement in joinBy logic
Fixed #3108, dev code regression regarding xAxis.min and max.
Better fix for #3065, also fixes #3072.
Reverted commit 6e532c95a27f78e3679d571ae7958f02c1087adb