Use towncrier for Coin change logs

Creating manual production update changelogs is manual work and the sent git logs are difficult to read for humans and contain lot of useless information for our end-users.

Import a tool, eg. https://pypi.org/project/towncrier/ which could be used to provide better and more understandable context. Use the tool content to publish the information on the webserver.

Example of the auto-generated output is here:

https://aiohttp.readthedocs.io/en/stable/changes.html#aiohttp-changes