Release a first alpha version of Zino 2

[lunkwill42]

An assortment of tasks that need to be completed to make a first alpha release:

• [x] #156
• [x] #157
• [x] Merge outstanding PRs
  • [x] #124
  • [x] #133
  • [x] #161
  • [x] #149
  • [x] #162
  • [x] #163
  • [x] #164
• [x] Make a stable branch
• [x] #165
• [x] Tag version 2.0.0-alpha.1
• [x] Upload first package to PyPI

[lunkwill42]

Release was out on Friday, closing :tada: