Merge branch 'py3_pyqt5' of https://github.com/Dpeta/pesterchum-alt-servers into py3_pyqt5

.gitignore

@@ -15,3 +15,5 @@ quirks/*
 Pesterchum.dmg
 *.md.backup
 subscript.txt
+package-lock.json
+package.json

CHANGELOG.md

@@ -15,6 +15,7 @@
 
 ### Changed
 - setup.py build description to just "Pesterchum"
+- Made file capitalization consistent for a few files. (.PNG --> .png), because some file systems are queasy on that. (See https://superuser.com/questions/881804/case-sensitive-file-extensions-in-windows-and-linux) 
 
 ## [v2.1.1] - 2021-4-12
 
@@ -23,7 +24,7 @@
 - Fixed sRGB profile in steamchum.
 
 ### Changed
-- convo/tabwindow on trollian seems to be used for the general background color, so, I changed it to a value. I'm not use if this was intentional.
+- convo/tabwindow on trollian 2.5 seems to be used for the general background color, so, I changed it to a value. I'm not use if this was intentional.
 
 ## [v2.1.0] - 2021-4-11