Meta-issue: list of useful libraries

[DonaldTsang]

Here is a list of packages on Anaconda that can be used as a reference for what Nim could have

• http://docs.anaconda.com/anaconda/packages/py3.7_win-64/
• http://docs.anaconda.com/anaconda/packages/py3.7_linux-64/

This could take a while, but it have all of the features listed would make Nim the next great programming language.

Also useful:

• https://github.com/vinta/awesome-python
• https://github.com/markets/awesome-ruby
• https://github.com/ziadoz/awesome-php
• https://github.com/sorrycc/awesome-javascript