.gitignore: Update.

.gitignore

@@ -39,6 +39,13 @@ __old__
 
 *-venv
 
+mage8/
+rubarbe/
+linux/
+windows/
+
+install/
+
 ### END CUSTOM ###
 
 # Created by https://www.toptal.com/developers/gitignore/api/python
@@ -618,7 +625,7 @@ TSWLatexianTemp*
 
 # auto folder when using emacs and auctex
 ./auto/*
-*.el
+# *.el
 
 # expex forward references with \gathertags
 *-tags.tex