Formatting.

[ci skip]
Fixed resource leak in batch convert
Update cs-CZ.xml
Merge pull request #344 from Trottel/patch-8

Update cs-CZ.xml
Fix  #343 - Export to images now uses Pen LineJoin = Round - thx rebawest :)
Merge branch 'master' of https://github.com/SubtitleEdit/subtitleedit