3.0 Deployable Version

[LogCreative]

This version is a milestone for completing 200 commits🎉

PGFPlotsEdt is now deployable, with features added:

• The manual editing page is using Ace Editor now for a better user experience.
• The online compilation uses TeX Live 2020 by default. CJK is disabled by default.
• User could now download the repository and click on index.html to use it directly.
• User could also start the local deployment by python server.py to make use of the local compilation environment and for a better data secrecy.
• User could also deploy PGFPlotsEdt in docker for a wider deployment.

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This discussion was created from the release 3.0 Deployable Version.