Dbgr

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Added
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- Enabled listing of individual requests with ``dbgr list module:request``.
- Added ``secret`` type for password inputs from terminal.

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Fixed
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- Fix issue where recursive calls via ``dbgr.response`` didn't pass extra arguments to request.

Added
~~~~~
- Added developer documentation file ``CONTRIBUTORS.md``.

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Fixed
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- Re-enabled terminal autocomplete.

Added
~~~~~
- Added ``dbgr --version`` to display software version.

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Initial release.