added the --no-post-overwrites argument
modified FFmpegExtractAudioPP to accept whether it should overwrite post-processed files or not
apparently the -n option is available only in ffmpeg
not relying on ffmpeg to do the post-processed file checking, instead doing it directly in youtube-dl
Merge pull request #601 from paullik/no-post-overwrites

No post-processing overwrites
add --no-post-overwrites to README.md; + minor style fixes
TweetReel IE
Allow ampersand right after ? in youtube URLs (Closes #602)
Removed a spurious increment_downloads
Revert "Removed a spurious increment_downloads"

This reverts commit 92e3e18a1d1fb35b6d73b609725c250123835969.
The new updates system, relies on gh-pages, secured by RSA, uses external web servers
print some version and environment info on --verbose (+ py3 fixes)
some fixes, pulled the codename from the code
moved updating code to update.py
Removed a spurious increment_downloads, this time cleanly
moved docs and updates generation scripts from gh-pages branch to devscripts
addedd a serious Public Domain dedication, see http://unlicense.org/
three small edits

* ask for a --verbose log when reporting bugs in README.md
* re-enable Escapist test, seems stable now
* check that we are not downloading multiple videos when the template is fixed (NOT a complete fix: not detecting playlists)
Ok, the Escapist test was passing only in my Travis repo, do not ask me why; also, a small bugfix to the latest commit