Resolve issue with improperly sized / positioned legacy backdrops

Try fixing travis permissions problem for chrome

Remove all bitmap assets from libraries

Play the restored sound after undo/redo in the sound editor

Revert breaking change version update

react-intl-redux is introducing breaking changes in minor version updates since they’re pre version 1.0

Fix extensions disappearing when switching sprites

chore(package): update copy-webpack-plugin to version 4.2.3

Target specific palette

Use relative path to load extension assets

Append sprite name to monitor label for sprite-specific monitors.

Update react-responsive to the latest version 

Update react-test-renderer to the latest version 

Fix waveform in sound editor in Firefox

Register music extension assets

Update react to the latest version 

Update react-dom to the latest version 

Update enzyme-adapter-react-16 to the latest version 

Update react-tabs to the latest version 

Warn user before navigating away/unloading