Initial work on ChainedException rendering
Merge branch 'master' into chained-exception-html
Update path to is_newest_frame_first in tests
Move Exception to SingleException and add compatibility layer
Turn all exceptions into the new expanded exception interface
Merge exception + stacktrace interfaces into the new-style Exception interface
More various fixes and cleanup of rendering
Various improvements and docstrings for interfaces
Document and support protocol version 4
Update alias docs
Various cleanup for auth header docs and code
Support to_string, stacktrace, and single exception rendering
Decrease weight of Caused by in stacktrace
Better visuals for substacks and correct expansion
Merge branch 'master' into chained-exception-html
update stacktrace unit test