Remove trailing spaces
doc: add a link to slide "Bitcoin" by Colin Dean
doc: remove TODO tag from a done task :-)
doc: describe about Rabbit Slide Show
doc en: translate
doc en: fix syntax error

"#" is comment mark.
doc en: fix spacing
Require gettext 3.0.1 or later
Remove GooCanvas support TODO

We will use Clutter for canvas based API. Because Clutter can embed
GStreamer widget.
doc en: fix id/class
Add "ruby" helper method
test: use descriptive here document tag instead of EOX
test: group a README written in RD parsing test
test: share common values
test: use instance variables
test: add with extension patterns
test: group tests that focus extension
test: indent
test: add tests for README written in Hiki format
test: add missing heading