Chempy

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- Fractional stoichiometries are now officially supported in parser (e.g. Fe2O3.14)
- Complexes/crystal water should now be delimited with '..' (fix by jeremyagray)
- Unicode printing of subscript decimal point should now work (gh-223, fix by jeremyagray)
- Substance class now has a __hash__ function (fix by DNIIBOY)
- Unit per100eV now has correct repr (fix by daankoning)
- Passing results from balance_stoichiometry into Reaction now works (gh-218, thanks montmorill)

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- Reverted parsing behavior for crystal water. Use this release to convert to new syntax:
NaSO4..10H2O
from chempy-0.9+ the following syntax is supported:
Fe2O3.14
v0.8.3 had a regression in this respect, see gh-223

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- Fixes for latest version of quantities.
- Build python wheel as part of release script.

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- changed version of dependency "pyodesys"

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- package "jupyter" was listed as formal dependency, now removed.

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- Some minor fixes.
- Updated lowest support versions of a few dependencies.
- Dropped pytest-pep8 for now (unmaintained).