LGTM. This issue also adds some scheme code and a conversion rule – they are different commits, right?
https://codereview.appspot.com/560030044/diff/557800043/scm/define-context-properties.scm File scm/define-context-properties.scm (right): https://codereview.appspot.com/560030044/diff/557800043/scm/define-context-properties.scm#newcode609 scm/define-context-properties.scm:609: merge rests when this is set to true.") While you are at it, please fix indentation (i.e., no indentation for the continuation line). https://codereview.appspot.com/560030044/
