ACBF Editor 1.13 is out

Written for Advanced Comic Book Format by Robert Kubík (Pastierovič) on 2018-01-01

ACBF Editor 1.13 is out. Changes are:
- added rendering and switching between text-layers in frames/text-layers editor (F5 will refresh image)
- added command line option to convert/export particular text-layer to underlying image
- added shortcuts for strikethrough, sub and sup tags in edit text area window
- added help window for edit text area
- several minor fixes