v0.3.1

Apollo Android v0.3.1

#426 Add memoizing toString()/hashCode()
#440, #481 Fix package prefixes
#434 Make generated class structure even more flat
#439 Generate fields javadocs from schema description
#428 Feature application interceptors
#445 Display output of apollo-integration task
#447 Emit whole response instead just data in Rx wrapper
#444 Docs for classes in apollo-api module
#471 ApolloParseException is thrown in case response json data field is null
#458 Custom cache key resolver
#472 CustomTypeAdater cannot map to scalar type
#475 Apply the apollo plugin at an earlier stage
#414 Add CacheHeaders
#473 Introduce ApolloCallCanceledException
#480 Read operation/fragment from store
#485 Refactor HttpCache
#494 Builder for no parameters
#461 Add a schema introspection task
#499 Add Java8 Optional generation
#491 Prepare for query re-fetching
#500 Remove unnecessary null check from equals/hashcode
#505 Handle Java reserved words
#504 Introduce explicit re-fetch query for mutation operation
#506 Add custom GraphQL error attributes
#469 Espresso idling resource for Apollo GraphQL client
#515 Fix bug with input type builder assigning double to int
#509 Add re-fetch query watchers
#517 Add Deprecated annotation generation