Update changelog

ChangeLog

@@ -11,6 +11,18 @@
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+0.18.0 --- 2021 . 05 . 18
+- New 'free loop-length' audio recording mode (#63)
+- Many AudioBuffer improvements
+- Audio configuration panel refactoring
+- KernelAudio improvements and cleanups
+- Relaxed BPM handling when working with JACK
+- Install executable to FHS compliant location (#450)
+- [CI] Don't UPX binaries on macOS (#459)
+- Fix Overdub protection ON by default not working (#460)
+- Fix crash when moving up from a deleted folder (#455)
+
+
 0.17.2 --- 2021 . 03 . 29
 - New double-buffered audio engine
 - Improved audio sample rendering precision