Add support for showing absolute ETA

[mmirate]

i.e. instead of the estimated amount of time remaining in the print, this is the datetime at which the print is estimated to finish.

Also, while I was at it, I put the status-embed's filename field inside backticks, so that filenames containing double underscores don't get mangled by Discord's Markdown interpretation.

[mmirate]

ERROR: Package 'rsa' requires a different Python: 2.7.17 not in '>=3.5, <4'

<snip>

___________________________________ summary ____________________________________
ERROR:   py27: could not install deps [git+https://github.com/foosel/OctoPrint.git@1.3.12, -rrequirements.txt, -rrequirements-dev.txt]; v = InvocationError('/root/repo/.tox/py27/bin/python -m pip install git+https://github.com/foosel/OctoPrint.git@1.3.12 -rrequirements.txt -rrequirements-dev.txt', 1)
  py37: commands succeeded

FYI, your CI appears to have some pre-existing problems. Though, since Python 2 has been unsupported for quite awhile by Octoprint (let alone by the Python upstream themselves), I think this is trivially fixable by removing Python 2 from this project's testing matrix.

[cameroncros]

Yup, the py27 testing is pretty much pointless, will remove in the future. I will try review this PR soon, thanks for the contribution.

…

On Fri, 14 May 2021, 8:03 am Milo Mirate, ***@***.***> wrote: ___________________________________ summary ____________________________________ ERROR: py27: could not install deps ***@***.***, -rrequirements.txt, -rrequirements-dev.txt]; v = InvocationError('/root/repo/.tox/py27/bin/python -m pip install ***@***.*** -rrequirements.txt -rrequirements-dev.txt', 1) py37: commands succeeded FYI, your CI appears to have some pre-existing problems. Though, since Python 2 has been unsupported for awhile by Octoprint (let alone by the Python upstream themselves), I think this is trivially fixable by removing Python 2 from this project's testing matrix. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#188 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAK7FL5ETCW23B7R3ECU6ELTNRECJANCNFSM44ZV7ZVA> .

[cameroncros]

Sorry for the delay, but I have now merged this. Thank you for your contribution.

[mmirate]

You're welcome! 😃