0.7.1.b3284: Optimise workers (#920)

* Added timeout to run_turn, and begun optimisation of worker

* update how output is captured from user's code

* Begun migration from Flask to aiohttp

* remove comments

* fix string append

* fix async_map

* timing startup times

* Merge branch 'development' into optimise_workers

* remove timeit's and comments+logging

* Merge branch 'development' into optimise_workers

* remove flask and requests

* removed addition to output log

* added doc string

* pep8

* pep8++

* pep8++

* Fixed doc string inconsistency

* minor changes

* removed unnecessary print

* removed potentially confusing comment

* update frontend deps

* print host and port to logs on startup

* bump version

* Merge branch 'development' into optimise_workers