feat: changelogs

docs/changelogs/1.9.4.md

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+# Blitzkrieg 1.9.4
+
+Haha, I lied. More fixes.
+
+## Fixes
+
+- Tank names once again show when searching for tank stats
+- Tier weights now ignore tanks without entries in the `tankopedia`
+
+## Technical Changes
+
+- All `tankopedia` derivatives are now promises