updated for 2.1.13

updated version

Merge pull request swagger-api#687 from swagger-api/release-prepare

updated versions for release

updated versions

updated version

updated version

formatting

rebuilt, bumped version

Merge pull request swagger-api#579 from swagger-api/issue-577

example & default values not exposed in UI

Merge pull request swagger-api#574 from swagger-api/resolver-tests

resolver refactoring