This updates various docs in the project.
* Get rid of MAINTAINERS
* Update JSON.md with tasks and plans
* Fix some weirndess in the README
* Polish CONTRIBUTING.md
Prior to this commit, strings did not properly handle providers
which had multiple related `defaultfor`s. In code, these are written
as comma-separated constraints. This commit updates strings' puppet
provider handler, as well as the template which generates HTML for
`defaultfor` statements.
Note that it was necessary to make a breaking change to the JSON
schema to accomodate multiple AND'ed defaults. Previously, provider
defaults were contained in a single key-value map. Now, they are
contained in an array of key-value lists, which allows multiple
constraints to be associated with each other.