* Buffer standard input line-by-line
* Add non-root .editorconfig for JS & HTML indent
* Add support for clearing REPL with CTRL+L
* Support unicode in stdout and stderr
* Remove \r\n normalization
* Note that local .editorconfig file extends root
* Only normalize lone \r characters (convert to \n)
* Skip non-printable characters in buffered input
* Fix Safari bug (regex lookbehind not supported)
Co-authored-by: Christian Heimes <christian@python.org>