pyiron_vasp-0.2.3

What's Changed

• Remove all to_hdf() and from_hdf() functions by @jan-janssen in #34
• Regex patch by @jan-janssen in #35
• vasp output by @jan-janssen in #36
• Set matplotlib as optional dependency by @jan-janssen in #37

Full Changelog: pyiron_vasp-0.2.2...pyiron_vasp-0.2.3