Git-autoshare

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- fix a regression where the GIT_AUTOSHARE_MODE environment variable became necessary

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- support organization wildcards in git-autoshare-prefetch
- support python >= 3.6 only (no code change yet, only stop testing)

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- support ssh:// urls, remove dependency on giturlparse

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- always prefetch cache before cloning, to make sure the cache is updated
regularly

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- add submodule-add command
- use safe_load to parse configuration
- allow wildcards in configuration
- internal refactoring

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- support for private repositories
- better handling of remotes in prefetch
- prefetch with --prun