Otoole

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- Update zenodo metadata for JOSS

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- Fixes CPLEX result processing docs
- Added joss status badge to readme
- Fix Tests on Windows
- Update graphviz install instructions

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- Public Python API added to call otoole directly in Python files
- ReadCplex directly reads in CPLEX solution files. Drops the need to transform and sort solution files
- ReadGlpk class added to process GLPK solution files
- Update to Pydantic v2.0
- ReadResultsCbc renamed to ReadWideResults
- Model validation instructions updated in documentation
- The ``--input_datafile`` argument is deprecated, and the user now must supply the input data to process results
- Locks pandas to <2.1

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- Fixed issue with pydantic v2.0.0
- Dropped support for Python 3.8. Otoole now requires Python 3.9 or later

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- Improved error message for multiple names mismatches
- Fix for excel pivoting bug (issue 171)
- Fix data type casting issue for floats to ints (issue 167)
- Deprecates calculated field for Result definitions in config file (issue 173)
- Minor documentation updates

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- Fix of pandas version in setup.cfg