Ditz issue update
Add current (rough) Git conventions
Merge branch 'add-git-conventions-doc'
Remove Duktape binaries

These won't be edited out of the repo, but no further binaries will be added.
Use duktape-releases repo for website build
Release checks: github releases, duktape-releases
Merge branch 'remove-release-binaries'

Remove Duktape release binaries from the repo and use duktape-releases repo
for the website build.

Note that binaries are not purged from the Duktape main repository by
history rewriting to avoid breaking tags and commit hashes.  The releases
should take less than 10MB so this should not be a big deal.