Support for some form of live reload
Like running flexx serve, and upon saving the file that defines your app, it gets automatically reloaded in the browser, preferably with state (i.e. what tab is open) preserved.
Looked into this for a bit. The main bottleneck seems to be a proper (cross platform) solution to watch the file system. I guess we may have an optional dependency for this functionality though.
Quoting @korijn:
During development, especially when styling, an auto-reload feature for at least the webruntimes would be a nice boost for productivity.
Tornado offers this: http://www.tornadoweb.org/en/stable/autoreload.html Alternatively you can use watchdog to implement something similar: https://pypi.python.org/pypi/watchdog