Try to have released files available.

Try `all_branches`.
Fix #569
Remove multiple references to --no-prelude
Fix #403
Fix #548
Fix #570
Merge pull request #574 from purescript/569

Fix #569
Merge pull request #575 from purescript/564

Fix #564
Merge pull request #576 from purescript/403

Fix #403
Merge pull request #577 from purescript/548

Fix #548
Merge pull request #578 from purescript/570

Fix #570
Remove api_key
Remove repo
Merge pull request #573 from joneshf/releases

Upload binaries to releases.
Add encrypted key
Revert "Add encrypted key"

This reverts commit 9ea6a8f90687a8666b5a9d14b71d210a63a9001e.
Use environment variable for OAuth token
Prefix output with a 'Generated by psc version X.Y.Z' comment #557
Merge pull request #583 from purescript/557

Prefix output with a 'Generated by psc version X.Y.Z' comment #557
Fix #584