Leaflet/Leaflet — pull request #2503 by axefrog (2014-03-01 16:15:30+00:00)
Title: Fix for touch-sensitive browsers detecting drag on tap

Chrome 33 on Android seems to very commonly detect a 1 pixel drag movement during a standard touch tap, when no drag was intended, making it extremely difficult to tap on markers. This fix prevents a drag from beginning until the X and Y drag offset is at least 3 pixels in total.