[meld/meld-3-18] Update the gitignore file

[Kai Willadsen <kaiw src gnome org>]

commit 162842b8618874e118a38cfb6668af08b21996fb
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Tue Nov 6 06:19:20 2018 +1000

    Update the gitignore file

 .gitignore | 30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 075a30d1..6e83d795 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,28 @@
-*.pyc
+# VCS conflicts
 *.orig
 *.rej
+
+# Byte compiled Python files
+__pycache__/
+*.pyc
+
+# Compiled resources
+data/gschemas.compiled
+
+# External tooling caches
+.flatpak-builder/
+.mypy_cache/
+.pytest_cache/
+
+# Build & distribution artifacts
+build/
+dist/
+MANIFEST
+
+# Special project build artifacts
+*-installed
+
+# Files created from intltool .in templates
 *.desktop
-*.install
 data/appdata.xml
 data/mime/meld.xml
-build
-dist
-MANIFEST
-data/gschemas.compiled
-build/