updated history

Author: Martin Klang

HISTORY.md

@@ -1,7 +1,4 @@
-* Implemented RPN messages in VoiceAllocator
-* Update ExponentialDecayEnvelope
-* Implemented LinearAdsrEnvelope and ExponentialAdsrEnvelope
-* Changed to use std::min/max/abs/clamp for C++ compilation units
+* Updated CMSIS libraries
 
 v21.2
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@@ -78,4 +75,4 @@ OwlProgram release, including OWL Library, to coincide with release v10 of the O
 Prehistory
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-A wise old OWL sat in an oak.
+A wise old OWL sat in an oak.