Feature/read panel pressures (#6)

* First pass on W1PANPRE reader

* v0.1.3

* Guthub doesn't support python 3.6 anymore

* use ==/!= to compare constant literals (str, bytes, int, float, tuple)

* dependency error. python 3.9 and numpy 1.18

* removed duplicated method

* use correct version in CHANGES.md

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Co-authored-by: EBGlom <[email protected]>
Co-authored-by: AudunGravdalJohansen <[email protected]>

add changelog and bump version

Specify content type to correctly parse the README.md.

Corrected typos and some incorrect information in the README.md.