v0.2.9: Middleware collection

[wneessen]

This release is a very minor release. It only adds Msg.GetGenHeader() so that 3rd party middleware can access already set generic headers, in case they want to alter them.

This release is important though, since it adds information about a new Middlware repository we started: https://github.com/wneessen/go-mail-middleware. A collection of useful middlewares that can be used with go-mail. A specific section has been added to the README.

Noteworthy changes

• 10575c0: adds the Msg.GetGenHeader() method

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This discussion was created from the release v0.2.9: Middleware collection.