Show update logs if available

[TheDuckCow]

If there are update logs available, display the text of the log.

This would potentially entail parsing and finding a way to better display or show markdown in blender. Some thoughts/related considerations

• Logs are only available with tags that are also "releases", but may still be blank
• Currently the updater works based on tags and not releases (the setting "use_releases" still needs to be implemented to alternatively use releases over tags)
• Be able to display the change log in a UI list
  • Here, we should strip down the markdown code in some meaningful way.
  • Should auto determine the "word wrapping" to generate multiple lines in a scrolling list view
  • If feeling super fancy, could even place inline buttons for web urls; certain icons could be used for things like bullets etc.
• Remove or just provide direct links to things like images/video
• There should also be easily available buttons to view the log in the text editor (generate a new text block with full markdown code) as well as to view the release logs online.
• The first version of showing logs doesn't need the bells and whistles of parsing the markdown, but at minimum needs the word wrapping capabilities.
• Save current version logs in the json file; upon running check, can even also grab the current version log if not already local (perhaps launch as a secondary background check so that getting the current status is quicker).

Current concept:

[johnroper100]

Could the user have the option to view older release logs?

[TheDuckCow]

Yeah, assuming they are available it would be fairly straightforward to grab once this UI piece is implemented.

[TheDuckCow]

Started to do some initial development on this item, parsing out key features of markdown code and stripping the formatting and parsing out the features.

Note this useful reference:
https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet

Remaining goals:

• Replaces image markdown code with the [alt-text] followed by the 'IMAGE_COL' icon label, which acts as an emboss=False url_open operator to the original image location (may be hard to determine if non-absolute links are used)
• Remove styling options like for bold and italics, since they can't show up in blender
• Implement more intelligent auto-line wrapping; right now you have to hard set the width to e.g. 100 chars or something like that, it may be possible to interpret based from the draw self module
• Implement in-line link creation, where the [link text](link.destination.com) is replaced by link text # where # would be the CONSTRAINTS icon in a label, and the whole thing would be a non-embossed url_opener operator to the original link.
• If feeling super advanced, could hack in bold/italics/underlines by using "..." label characters with very short .scale_y heights so they appear just under the main text. This could also work for placing a line underneath url's.
• Implement drawing option to display either as a self contained object (typically drawn into a box UI element but not necessarily), or to implement natively inside a scrolling UI list (which is a bit of a strange adaptation but would work).

And note the WIP progress so far, which essentially just parses out headers (all treated the same and only if using # method) and bullet points (up to two-deep). I've started to design the structure to interpret and extract (remove, due to lack of text styling in blender) features like bold, italics and images.