Merge tag '0.1.2' into develop

Version 0.1.2
Generate index from filenames

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>
Use cb_document_index_generate
We use gdk-pixbuf, so make sure we link against it

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>
Also link against gdk

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>
And against gio

Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>
Allow uppercase file extensions in comic books
Version 0.1.3
Merge branch 'release/0.1.3'