issue #4118: refactor physics update
issue #4118: add PhysicsBody::setResting()
issue #4118:  fix bit mask bug
add touch move support
add touch swipe
Merge remote-tracking branch 'upstream/develop' into console-simulate-touch
issue #4118:  add _isDamping to PhysicsBody and fix bugs
issue #4118: add physics contact test.
reset project.pbxproj
support touch swipe directive
fix help typo
issue #4118:  rename set/getElasticity to set/getRestitution
fix touchEnd lambda
issue #4118:  change PhysicsBody::updateDamping() to protected.
use atof instead of stof to fix compile error on android
merge begin & end with one 'tap' command
Merge pull request #5462 from heliclei/console-simulate-touch

closed #4146: Simulate touch events(tap,swipe) via CCConsole
Update CHANGELOG [ci skip]
closed #4144: fix bug: Node::setPhysicsBody doesn't work at the second time.
fixed #3868. when singleton delted, it should dispatch callbacks.