* pgm: add option if reflogs should be written when converting to reftable
* pgm: add option to configure if convert-ref-storage should create backup
* Set config "extensions" option when converting ref storage format
* Move BaseReceivePack#advertisedRefs getter and setter to ReceivePack
* Move BaseReceivePack#walk getter to ReceivePack
* Move BaseReceivePack#db getter to ReceivePack
* Move BaseReceivePack#pushCert getter and setter to ReceivePack
* Remove unused API problem filters
* FileRepositoryBuilderTest: Don't explicitly close BufferedWriter in try-with-resource
* Explicitly specify charset when constructing FileWriter
* Explicitly specify charset when constructing BufferedReader
* Explicitly specify charset in constructor of InputStreamReader
* Explicitly specify charset when calling getBytes
* Explicitly specify charset in constructor of String
* Make inner classes static where possible
* Bazel: Increase severity of ExpectedExceptionChecker to ERROR
* Do not rewrite parents in RevWalkTextBuiltins
* RevWalk: Allow disabling parent rewriting
* RevWalkTextBuiltin: Add -n to limit number of commits returned
* [findBugs] Don't ignore exceptional return value of File.mkdir()
* [findBugs] Don't rely on default encoding
* [findBugs] Don't call toString() on a string
* Add missing javadoc for archive code
* Remove unused import in Archive
* Drop unnecessary "throws" clauses in archive code
* Move FormatActivator.start()/stop() to a separate class