Some sort of changelog / release notes?

[rixx]

Just an idea/request, please close if you don't care:

As somebody who uses aiofile a lot, it would be helpful to see a changelog or release notes somewhere. Wouldn't even need to be anything detailed, just maybe a mention of methods that have changed or compatibility that has been added/dropped.

Currently, when I'm upgrading I'm scrolling through the commits and hope that I'd catch things that are important to me. Definitely doable, but I'm sure I'm missing stuff this way.