New Feature: Support for callback protocols, as specified in PEP 544
New Feature: Class and function decorators now preserve generic functions rather than specializing them.
Bug Fix: Fixed bug in file system watch logic for config file. It was not detecting the case where the config file was deleted and recreated, as happens when switching branches in git.
Bug Fix: Normalize the root directory path provided by node so Windows command-line tool can find the typeshed fallback path.
Bug Fix: Type checker now preserves "Any" type for iterators, with statements, etc. rather than turning them into "unknown" types, which are reported in strict mode.