move a circlemarker's popup with each new position.
Merge pull request #1927 from snkashis/circlemarker_popup

update a circlemarker's popup positioning when using setLatLng.
Make container optional in L.DomUtil.getMousePosition(). Addresses #1926
Merge pull request #1928 from scooterw/get_mouse_position_fix

Make container optional in L.DomUtil.getMousePosition(). Addresses #1926
Fix rounding issues in Map::invalidateSize
Support center-oriented scroll/double-click zoom
Invalidate _initialCenter along with size (fixes #1919)
Merge pull request #1940 from jfirebaugh/1919

Invalidate _initialCenter along with size (fixes #1919)
Merge pull request #1939 from jfirebaugh/zoom

Support center-oriented scroll/double-click zoom
update changelog
Merge pull request #1931 from russelldavis/fix-invalidate-size

Fix rounding issues in Map::invalidateSize
update changelog more [skip ci]
Return this even when short-circuiting
Marker should fire 'add' event like geometry Path and any object utilizing Ilayer
Merge pull request #1942 from tohaocean/master

Marker improvement
Fix for zoomBox fires map click Event (Issue #1884)
moved this._moved = false to the top of _onDown to fix an Issue von shift-click after dragging
Merge pull request #1952 from fastrde/fixNoShiftClickAfterDrag

fixes shift clicking Issue described in (Issue #1950)
Merge branch 'fixNoShiftClickAfterDrag'
add attribution and update function