0.20

• Allow sources being compiled to be read from annotation processors. (95e749d)
• Fix false negative when comparing source files that differ only in try-with-resources specifications. (cb6486c)
• Add withAnnotationProcessorPath() to Compiler. (80a9ee0)
• Improve error messages rendered by JavaSourcesSubject.parsesAs() and JavaFileObjectSubject.containsElementsIn() to more easily distinguish between errors incurred in actual vs expected source. (115014e)
• Use @Nullable from the Checker Framework and fix a few null-correctness issues. (6260258)
• Fixed bug where testing package-info.java with parsesAs() threw a NullPointerException. (c46b1b6)
• Close JavaCompiler objects to avoid resource leaks. (cd2c0a8)