Sparqlwrapper

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- Ported codebase to Python 3. Dropped support for Python 2
- Removed nosetest in favour of unittest
- Added a CLI: ``rqw``
- Updated for RDFLib >= 6.1.1
- Added type hints

Special thanks to `eggplants <https://github.com/eggplants>`_ for making this release happen.

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- Improve/tests for development (131)
- Changed. Be more strict on Accept Turtle header (137)
- Migrated documentation from epydoc to sphinx and readthedocs

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- Added example
- hotfix: Added custom_fixers folder in MANIFEST, in order to be used in python3 (129)

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- Include ChangeLog.txt in the distribution
- Removed import of SPARQLWrapper in setup.py (fixed 113 and closed 115)
- Added support for querying RDF/XML in a CONSTRUCT query type
- Updated the procedure for determining the query type (120)
- Do not send format parameter for the results ([format, output, results]) when the query is a SPARQL Update query
- Added test for new agrovoc SPARQL endpoint (using Fuseki2)
- Added test for 4store SPARQL endpoint (used by agroportal)
- Added/Updated tests
- Added examples
- Updated doc
- Fixed code generated for python3 using 2to3, adding a custom fixer (109)

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- Fixed bug (100)
- Updated doc
- Added Unauthorized exception in SPARQLWrapperExceptions
- Added support for custom HTTP headers (52)
- Changed timeout setting (106)

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- Update classifiers (Python 3.6)
- Added some documentation about the parameter to indicate the output format
- Fixed typo in width calculation
- Added support for CSV, TSV (PR 98)
- Added support for Only HTTP Content Negotiation (82)