Thanks for the nice feedback! Wow, the first feature request after 12 years! :) I added the requested keybinding Ctrl-l (add last comment) and documented the existing keybinding for Ctrl-c (add copyright), see revision 456. BTW, I don't use the JPEG comment section any more, I completely switched to use IPTC data which offers more structure and thus better searches. Have you ever tried it?
Added keybindings in comment window Ctrl-l for last comment and Ctrl-c for copyright, see also https://sourceforge.net/p/mapivi/feature-requests/25/
new feature to convert heic images to jpg images
added progress info in log frame when sending pictures via email
bug fix to last version (452): problem: context menu closed when a sub menu item should be selected.
changed behavior of all three context menus of the main window: folder menu, thumbnail menu, picture menu
added new option to activate "filter pics by keyword" at each start of Mapivi.
fix: jhead autorot does not change the modification date of the file.