Store product description when syncing from Memberful
Add note about syncing product descriptions to the changelog
Ensure the role decider receives an instance of WP_User
Do not pass currently signed in user to syncer

It does not need to be aware of the currently signed in user.

In the event that there is an existing user in WP it relies on the
authenticator telling it if the user has approved the merge.
Add vagrant environment for working on the plugin.
Move mapping pre-conditions into a separate method #96
Start moving around logic in user mapping to make it easier to digest

refs #96
Pull WP user creation out of the mapping class #96
Fixing syntax errors and typos in user mapping #96
Allow mappings to be updated by member id or wp user id #96

We want to update by user id in most scenarios, but if a WP user is
already mapped to a Memberful member and we're changing the member
they're mapped to then we need to update by user id.
Fix references to Memberful_User_Map:: #96
Ensure $wp_user_existed_before_request is passed to the mapping logic #96
Merge pull request #97 from memberful/96-handle-connecting-to-different-site

96 handle connecting to different site
Updating readme for 1.9.0
Changing stable version number to 1.9.0