Prevent infinite loop in adding of canvas CircleMarkers
Merge pull request #1713 from snkashis/circlemarker_loop

Prevent infinite loop in adding of canvas CircleMarkers
Prevent memory leak in removal of canvas layers
Merge pull request #1723 from snkashis/canvas_removals

Prevent memory leak in removal of canvas layers
Add a test that shows the DOM change failure

The icon should switch from blue to red and back, but does not in IE
because the DOMelement has disappeared, as in issue #561. Instead, the
mouseover event is fired on any mouse motion in the marker. In addition,
in FF & Chrome the mouseover and mouseout events are continously fired
on any movement, which gives the correct visual results but causes
a lot of superflous event handling.
Reuse DOM object in Marker.SetIcon, fixes #561

If there already exists a DOM object for this marker, reuse it by setting
a new src and style rather than creating a new one.
Make test/example actually check ondragstart/end
Fix indentation
Don't call Layer#onRemove if Layer#onAdd was never called
Don't call Layer#onAdd on a layer that has been removed
Don't fire layerremove if layeradd was never fired
Fix trailing whitespace
update build
Ensure styles are set even when reusing DOM.

This fixes the error found in review.
update jshint to 2.1.3, reenable jshint white - big thanks to @antonkovalyov
Merge pull request #1729 from jfirebaugh/add-remove

Don't call Layer#onRemove if Layer#onAdd was never called
Merge pull request #1726 from Norkart/reuseIconDOM

Reuse icon DOM
fix hinting error, update build
Prevent contextmenu events on popups from falling thru to map
Merge pull request #1732 from snkashis/contextpopup

Prevent contextmenu events on popups from falling thru to map