Fix for the concurrency bug, when end event fires before the stream finished writing gadget bundle. That happens for larger gadgets.
Merge pull request #31 from Versal/fix/upload

Fix for error "Could not find part: content" on `versal upload`.
Bump Player to 1.2.13
Add optional ?learn=true flag
Merge pull request #34 from Versal/feature/learn-true

Add optional ?learn=true flag
Merge pull request #32 from Versal/bump/player-1-2-13

Bump Player to 1.2.13
refactor api to prepare for another launcher
Introduce `--iframe` flag, which runs a standalone launcher. Sort of an isolated environment.
cleanup and rename option to --iframe