OTX 1.4 March 2021

Change Notes:

March OTX Update

Change Summary:

New PRs
#3674 - Stop Motion Improvements by jeremybullock (OpenCV for all builds)  [jeremybullock/shun-iwasawa]
#3713 - Add Tool Shortcut Keypress Length Option  [manongjohn/konero]
#3714 - Icons for all commands  [shun-iwasawa]
#3717 - Update Translation Files for V1.5  [shun-iwasawa]
#3719 - Fix New Level Undo  [shun-iwasawa]
#3721 - Fix crash in Type tool on linux  [le-dragon-dev]
#3729 - Actions: Update Ubuntu Version  [shun-iwasawa]
#3730 - Fix Viewer Window Disappearing on Undock  [shun-iwasawa]
#3731 - Stylesheet Fixes for v1.5  [konero]
#3732 - Add Tooltype Icons  [konero]
#3736 - Update Chinese UI translation for v1.5  [jcome]
#3738 - Remove LibJpeg & add jpeg-turbo package in the thirdparty folder  [shun-iwasawa]
#3742 - Fix Icon Rendering for Hdpi  [konero]
#3743 - Fix Temp Icon Over State in Menu  [konero]