chore: update changelog for 0.8.1

CHANGELOG.md

@@ -1,3 +1,9 @@
+## [0.8.1](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/compare/0.8.0...0.8.1) (2020-06-10)
+
+### Bug Fixes
+
+* **OctaveShift:** avoid some errors when end of octaveshift not found ([#778](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/778)) ([86e6726](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/commit/86e6726f4b3cf7f1ebde4deb7e33de5c57237167)), closes [#777](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/777) [#591](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/591)
+
 # [0.8.0](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/compare/0.7.6...0.8.0) (2020-06-10)