3.8.1
What's Changed feat: introduce mypy type checking with gradual adoption by @kitagry in #3403 feat: type check parameter classes by @kitagry in #3406 Proposal: set default value of OptionalParameter to None by @kitagry in #3411 Fix deprecated datetime.utcfromtimestamp() calls by @apoorvdarshan in #3410 Fix BoolParameter to consider global parsing default. by @riga in #3416 fix(server): resolve /his…