Moin2gitwiki

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- fix: remove hardwired proxy settings
- fix: add recursion limit for beautiful soup
- fix: updated pytest
- fix: change startup to not require --moin-data for check

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- Improvements to home page generation
- Fix image linking which could presumably have never worked!
- Add proxy support

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- Make home page generation optional
- Handle attachments in the wiki

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- Some str/bytes fixes

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- Swap out `sh` for `subprocess` module for running pandoc
- Strip extra divs that appear in output