bump version in changelog
Added WebGL heatmap plugin

I added it next to and after the other heatmap plugins.
Spelling/punctuation adjustments
Issue #2199 - Set focus to popup close button when popup is opened.
Gave L.CircleMarker.setLatLng a return statement.
Adds a check to make sure the closeButton option is set before focusing
Disable webkit3d on android 2/3 because it is buggy as. fixes #2198
Revert "'#1968 compiled interpolation'"
Merge pull request #2217 from calvinmetcalf/terrible-mistake

remove functional constructors and compiled templates
Merge pull request #2216 from danzel/android23

Disable webkit3d on android 2/3 because it is buggy as
Merge pull request #2207 from Zombienaute/master

Issue #2199 - Set focus to popup close button when popup is opened.
Minor spelling fix
Merge pull request #2227 from nexushoratio/patch-1

Minor spelling fix
improve size reporting when building and add gzipped size
improve build reporting more
do not change internal properties in invalidateSize() when map is not loaded
Use event.target as a default for event.layer. Closes #2252

In 2464d13, event.layer is overwritten to equal event.target. This
commit uses event.target as a default for event.layer.
Don't fire dragend if a dragstart did not occur due to a multitouch action. fixes #2256
Merge pull request #2250 from Zverik/sizechanged

do not change internal properties in invalidateSize() when !map._loaded
Merge pull request #2253 from gumballhead/event-layer

Use event.target as a default for event.layer