feat: added changelogs

docs/changelogs/1.4.0.md

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+# Blitzkrieg 1.4.0
+
+A **few features** :star: and a **few much needed fixes** :wrench:!
+
+## Changes
+
+- Added an "today" row to `/today` which displays your overall statistics
+- Gave `/tankstats` the new blitzkrieg look
+  - Also added "today", "60 days", and "career" stats
+- Added a beta warning to generated images
+- Updated the logo for match the new slate theme
+  - Canary versions now use the canary logo variant
+- Added subtle polka dots to the background
+
+## Fixes
+
+- Rewrote `/stats` to precisely calculate stats on a per-tank basis
+  - This should stop the bot from hallucinating about stats
+  - This should also stop the bot from giving stats from like a week ago
+  - Also added "60 day" stats
+- Tank autocomplete is now more human-tolerant just like username autocomplete
+- Titlebar discriminators are now truncated on overflow
+
+## Technical Changes
+
+- The bot now uses `bepaint`, a library that I made that standardizes the color palette
+  - Also updated the logo to follow this
+- Optimized how fonts are imported by fetching them all asynchronously