v4.1.1

New Features:
#663 Built-in protocols to support allow_empty_data
#666 Add ability to create target in ConfigEditor
#679 TlmViewer screen audit shouldn't count reserved item names

Maintenance:
#660 Update Opengl gem requirement version
#665 Refactor xtce parser

Bug Fixes:
#661 Render function bug?
#674 Add TlmViewerConfig spec and fix to_save

Migration Notes from COSMOS 4.0.x:
Any custom tools in other languages that use the COSMOS API will need to be updated.

To upgrade to the latest version of COSMOS, run "bundle update cosmos" in your COSMOS project folder.