Added release notes for 0.8.4

Change usages of deprecated cobra.core.Model.add_reaction()

Add another way to parse error returned by ModelSEED server

Bump version: 0.8.2 → 0.8.3

Fix setting reaction objective coefficient with cobra 0.6

Bump version: 0.8.1 → 0.8.2

Fix identation

Remove dependency on specific version of six, switch default ModelSEED service URL

Update bumpversion config

Add analysis notebook

bumpversion to 0.8.1

Only show duplicate metabolite warning when validate parameter is True

Add link to modelseed notebook

Fix typos in Jupyter instructions, update reference links

Add information about web service URLs