more cosmetic changes for Linux app with GTK-3
simplified spin ctrls in Prefs dialog for building Linux app with GTK-3
updated Lua to 5.5.0 and Ag to 2.1
fixed problem with bitmap buttons in Linux app when using GTK-3
attempt to solve some cosmetic issues on Linux after switching to GTK-3
updated Build.html to show how to build Linux Golly with GTK-3
Hmm, Google has just told me that GTK2 doesn't support Wayland so forget my suggestion to try it! I'll have to figure out how to move Golly to GTK3.
You're building Golly with GTK3? Our build docs say to use GTK2 so I'm wondering if that explains the problems with the Prefs dialog and the Help window. Are you able to rebuild wxGTK (and thus Golly) with GTK2? You'd probably need to install the GTK2 libs via "sudo apt-get install libgtk2.0-dev" or however wayland does it, and then run wxGTK's "../configure --with-gtk=2 etc...". I'd like to move to GTK3 but when I've tried that on my Mint 20 system I end up with a Golly that won't even start up...