feat: added changelogs

docs/changelogs/1.5.2.md

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+# Blitzkrieg 1.5.2
+
+Quite a few **bug fixes** with a **bunch more** on their way next update!
+
+## Fixes
+
+- Disabled image encoding as it seems to have broken in `1.5.0` and simply spams the console now
+- `/stats` now ignores tanks that don't have any averages
+  - Tanks may not have averages registered in Blitz Stars because they are new or are in testing
+  - Take a look at \_34's testing tanks in the image below
+- Fixed the "large image" prompt by simply removing the whole prompt
+  - _Kaboom? Yes Rico, kaboom._
+- `/today` now displays `--` when there is no WN8 to display
+  - This is unlike `/stats` which just shows 0 (this will be fixed soon)