prep 0.8.2

resolves casact#129

Bump version for release and address casact#117 mutation

Update README.rst

docs cleanup

Update setup.py

Merge pull request casact#109 from cbalona/develop

resolves casact#108 - Thank you for cleaning this up and making this a better package @cbalona !

resolves casact#101

finalize 0.7.8

setitem on loc, more ldf weight exponents