update maintainer list

- add @federicobond
- add @caskroom (it started appearing in the draft changelog)
- fix quoting
Fix Dropzone app name in the zip file. It changed from 'Dropzone' to 'Dropzone 3'.
minor amendments to release process/changelog

based on lessons learned from failed release v0.39.0,
`git push && git push --follow-tags` is smarter because
it reduces the chance of an unreleasable tag being pushed.
(git pushes the tags before it pushes the commits).
Update node-webkit to 0.10.2
TexShop 3.39
Merge pull request #5755 from ndr-qef/node-webkit

Update node-webkit to 0.10.2
Merge pull request #5756 from ahbeng/texshop-3.39

TexShop 3.39
Fix Error in checklinks. Closes #5752
Merge pull request #5750 from rolandwalker/release_process_updates

minor amendments to release process/changelog
Merge pull request #5749 from rolandwalker/update_maintainers

update maintainer list
Merge pull request #5754 from federicobond/fix-checklinks

Fix Error in checklinks
add SQLite Professional
Upgrade SmartGitHg 6.app to v6.0.5
Merge pull request #5761 from tolbkni/smartgithg

Upgrade SmartGitHg 6.app to v6.0.5
Fix download URLs of IntelliJ IDEA
flash-player and flash-player-debugger 14.0.0.176
Add XaoS 3.6
Update Atraci.app v0.6.0
cut v0.39.3
updates to release procedure after v0.39.3