gen-news.sh: Do not print commits with >1 one parent

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
lprint_rfc2483_playlist_properties: More properties

Print (as commented out) additional playlist properties in the rfc2483
format:
* QUVI_PLAYLIST_MEDIA_PROPERTY_DURATION_MS
* QUVI_PLAYLIST_PROPERTY_THUMBNAIL_URL
* QUVI_PLAYLIST_PROPERTY_TITLE
* QUVI_PLAYLIST_PROPERTY_ID

Add the `_print_pp_d' macro and the `_pp_d' function.

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
FIX: quvi-get: Use "default" with --print-streams

When there is only one media stream, and that is unnamed by the libquvi
media script, use "default" to identify this stream in the output.

We use "default" to identify the stream for the clarity of the users,
technically the string could be anything, e.g. "--stream foo" would
still select the default stream if there is only one stream available,
or "foo" matched none of the stream IDs.

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
Add a copyright notice to --version output

* Make the output untranslatable: remove _() macros
* Print the notice to the stderr

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
gen-news.sh: Do not print release author

Trivial information. Release date matters.

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
README: Requirements: Add aptitude commands

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
Update NEWS for v0.9.1

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>