Merge pull request graphql-java#99 from graphql-java/cache_calls_in_b…

…atch_load

ValueCache calls are made inside the batch load call

Merge pull request graphql-java#89 from prokop7/master

Add synchronized to loaderQueue inside completable future

Merge pull request graphql-java#87 from graphql-java/scheduled-datalo…

…ader-registry

Adding a ScheduledDataLoaderRegistry

JavaDoc tweaks

JavaDoc tweaks

Added the list of call context objects into the environment

PR changes

Bad naming in context provider options

Now with better tests and synchronisation that is more complete

Added statistics support (graphql-java#11)

* Added statistics support

* added delegating stats collector

* Added error counts to stats

* Added noop version of collector

* Made it doubles and added toMap

* javadoc warning

* batch load count is now the number of objects loaded via the batch function and batch invoke count the number of invocations of the batch function

* readme updates

* Made Statistics a class