0.21.0

• Fixed a bug: When comparing ASTs, for example in JavaFileObjectSubject.hasSourceEquivalentTo, some kinds of nodes were omitted from the comparison. In particular, if the expected code had an annotated type or a union type (multicatch), the actual code could contain anything at that point and the test would still pass. This was also true for post-Java-8 constructs like module declarations, yield statements, and the like. These omissions have been corrected. Some tests may now fail if the expected and actual source do not match, in ways that were hidden by this bug. (9a592f7)