tiny doc opt: new changes accessible on github

[hpvd]

not sure if this is the right type of report...

Which section should be improved

https://github.com/unpoly/unpoly/releases/tag/v3.3.0

How should this section be improved?

would be handy to have the info about changes of new versions/releases also on github
or have a simple deeplink link to the changes on https://unpoly.com/
e.g. from https://github.com/unpoly/unpoly/releases/tag/v3.3.0 to https://unpoly.com/changes/3.3.0

[triskweline]

If you want to build this: The release process is automated in the Rakefile. The task that makes a release is release:process.