retemplate the package and set the python version to 3.6+

[Cadair]

No description provided.

[dkistbot]

Hi there @Cadair 👋 - thanks for the pull request! I'm just a friendly 🤖 that checks for issues related to the changelog and making sure that this pull request is milestoned and labeled correctly. This is mainly intended for the maintainers, so if you are not a maintainer you can ignore this, and a maintainer will let you know if any action is required on your part 😃.

Everything looks good from my point of view! 👍

If there are any issues with this message, please report them here.

[codecov]

Codecov Report

Merging #11 into master will decrease coverage by 7.06%.
The diff coverage is 75%.

@@            Coverage Diff             @@
##           master      #11      +/-   ##
==========================================
- Coverage     100%   92.93%   -7.07%     
==========================================
  Files           9        9              
  Lines         175      184       +9     
==========================================
- Hits          175      171       -4     
- Misses          0       13      +13

Impacted Files	Coverage Δ
dkist/dataset/mixins.py	41.17% <100%> (-58.83%)	⬇️
dkist/dataset/dataset.py	96.42% <60%> (-3.58%)	⬇️
dkist/__init__.py	88.88% <83.33%> (-11.12%)	⬇️

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