New release? about chempy HOT 1 OPEN

@bjodah yes, I think @jeremyagray's greatly-improved parser merits a release. Personally I would name it 0.9.0 because it is a significant update to a core function.

Thanks for starting the release notes. I suggest adding a sentence to the parser note:

• Updated parser: chemical formulae can now accept fractional stoichiometries, cage structures and more. Also, invalid chemical formulae (for example, Ch4; note that the h is not capitalized and there is no element Ch) will now raise an error rather than being interpreted as valid and only including the last valid element (C).
• Table of elements updated with symbols and names for the (probably) last synthetic elements.

from chempy.