Fix bug 4749: release regex_t in summary_compile_simplify_regexp
fix bug 4750, 'remove regcomp wrapper and call regcomp directly'
Honor GTK project name¹, except some files… …where it refers to previous name of the project. ¹ https://mail.gnome.org/archives/gtk-devel-list/2019-February/msg00000.html
fix a bunch of buttons in dark corners. add some images to others
add 'Default From:' to folder prefs
Revert "Fix CID 1491382: malloc size too short by one because, worst case, qp_decode_const" This reverts commit 69e7131dc87ed1dbec2f9140a03b38feaf192cdf.
Fix CID 1491382: malloc size too short by one because, worst case, qp_decode_const will dump the exact same input string.
Remove duplicate includes
Better spacing of widgets in folder prefs.
Restrict widget size requisition to the width only.
Better widgets spacing and alignment in folder properties dialog.
Use gtk grid instead of table, fix tooltip (attached to wrong widget and missing a space), and fix code spacing.
Add a per-folder option so that a folder can be skipped when doing a goto next/prev unread/new message.
simplify colour saving
remove now unneeded colorsel.[ch]
use GtkColorChooser in folder prefs
improve layout of folder Properties pages
show the correct options for the folder type
don't expand 'Discard folder item' button unnecessarily, make it labe width
replace deprecated GtkTable (and a few display fixes