update changelog for 0.8.5

CHANGELOG.md

@@ -11,6 +11,7 @@
 ### Features
 
 * **Measure Numbers:** Display measure numbers (labels) as given in XML ([#541](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/541)) ([6f5d77a](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/commit/6f5d77a9efbe29d8e210c8715c01548f1bc067f3)), closes [#879](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/879)
+* **Options:** Add drawUpToPageNumber and drawUpToSystemNumber options ([#835](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay/issues/832))