Alias for 1.3.0-latest

Merge pull request #916 from oatpp/monitor_invalidate_all

network::monitor::ConnectionMonitor: invalidateAll() method

Update README.md

Update README.md

Merge pull request #330 from oatpp/update_readme

Update README.md + '1.2.0' changelog

Merge branch 'master' of github.com:oatpp/oatpp

Web. http::outgoing::Response. Fix data flush.

IODefinitions. Rename 'isValidIoHandle' --> 'isValidIOHandle'.

Merge pull request #166 from oatpp/thread_safe_LazyStringMap

LazyStringMap. Synchronize for thread-safety.

Increase oatpp version to '0.19.10'