Hints for keybindings. Refs #517
Merge branch 'master' of github.com:systemed/iD
Replace gray dot with marker icon. Fixes #474
Use nicer transitions on buttons like layerswitcher and geocoder. Refs #449
DrawWay#cancel shouldn't unconditionally delete the way

Fixes #514.
Reformat success page. Fixes #532
Merge branch 'master' of github.com:systemed/iD
Fix differenced redraw artifacts during pan/zoom

Fixes #543.
Fix midpoint dragging, break multiple touch drags
Fix exiting draw mode via other means (fixes #503)
Mode name and shortcut key should match
Close modals with esc or backspace
radial menu source, better user icon commit modal integration, small fixes.
Merge branch 'master' of github.com:systemed/iD
copy tweaks.
adding relation icon.
Snap to ways/vertices/midpoints when drawing (#240)

Also add anti-snapping behavior when option key is down.
Refactor operations

They're something distinct from actions. Actions are independent
of UI, operations are actions + UI (title, keybinding, modality,
etc.)
Move operation (fixes #536)
Remove unused DragWay behavior