Created changelog

Changelog.md

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+# Changelog
+
+## Current Dev (1.0.1)
+Changes that are in the develop branch
+
+### Bug Fixes:
+- Infinite FPS: [#42](https://github.com/MaxRobinsonTheGreat/LifeEngine/pull/45)
+- Spelling Fix: [#31](https://github.com/MaxRobinsonTheGreat/LifeEngine/pull/31)
+
+### UI Enhancements:
+- Hotkeys/improved zoom controls: [#47](https://github.com/MaxRobinsonTheGreat/LifeEngine/pull/47)
+- Improved mutation probability controls: [#43](https://github.com/MaxRobinsonTheGreat/LifeEngine/pull/43)
+- Ability to edit individual organism's mutability: [#46](https://github.com/MaxRobinsonTheGreat/LifeEngine/pull/46)
+
+### Simulation Enhancements:
+- 
+
+Thanks to contributors: @TrevorSayre @EvaisaGiac @Chrispykins
+
+## 1.0.0
+Initial release.