Bug fixes

fix #101

fix #200

Bug fixes and minor improvements

Show recalculated (based on speed) duration for the original file and for chapter

#202 Customise formatting.

Master

 Audio speed up / slow down. Bug fixes.

Rewrite speed variable using ObjectProperty

fix #216
fix #217

feature/153_limit_art_works

Add audio speed up / slow down

Automatic Linux build, some bug fixes

feature/151_linux_distr

feature/151_linux_distr

#209 fixed duplicated bitrates

Merge pull request #202 from yermak/development

Split chapters by intervals

feature/147_split_by_intervals

customisable context menu for chapters mode, which will result less confusion for users and allow to fit sub-tracks feature nicely