release v0.3

The [0.2] has been reverted due to unintentional early merge, so the
[0.3] is just a bump to avoid conflicts.

release v0.2

Added

* Included code from a
  [fork](https://git.sr.ht/~soywod/himalaya-emacs) [dantecatalfamo#15].
* Added possibility to mark multiple emails. Compatible actions:
  attachments, copy, move and delete. The implementation was inspired
  by the [tablist](https://github.com/politza/tablist) package) [dantecatalfamo#17].

Changed

* Adjusted code for Himalaya CLI
  [v0.7.0](pimalaya/himalaya#433).

Fixed

* Fixed `nil` subjects in read buffers.
* Fixed `Answered` flag not set after replying to an email.