Merge branch 'development'

# Conflicts:
#	readme.md
#	wrappers/python/python.cpp

Merge remote-tracking branch 'public/master' into add_options

Merge pull request IntelRealSense#697 from dorodnic/fixes

Fixing crashes in the viewer when switching between cameras

Temporarily removing js linter

Fixing formatting in python documentation

Merge remote-tracking branch 'origin/master' into development

Merge branch 'master' into rosdebian

Bump version

Increment librealsense version to 1.12.1

Bump the ROS version

removing confusing instructions regarding the camera firmware from re…

…adme.md. Will be published in official release notes