Who-ldap

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- Properly escape search filter string (http://ldap3.readthedocs.io/searches.htmlthe-search-operation)

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- Alter release workflow

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- Use version 2.3 of ``repoze.who`` which implements improved userdata heuristics

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- Search for users via filter if present [domruf]
- Switch to ``ldap3`` package (which was renamed from ``python3-ldap``) [Cito]
- Convert b64de/encode byte strings to regular strings in Python 3 [Cito]
- Use (objectClass=*) if no filter is specified when scope is base.

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- Issue log messages instead of exceptions for invalid credentials. [lovelle]

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- Updated documentation