* overhaul state API to allow state initialization (#9)
* add simple load test to local tests.
* fix ride-sharing benchmark
* Add Functions Host for tests, add simple load tests for AF and DF
* update placement support
* update and fix samples
* update functions host
* fix logging in emulator
* revise handling of activities to support placement and locking
* make exception serializer accessible to application layer
* some minor renamings for consistency
* define orchestration wrappers for events, reads, and updates
* add new support for client requests to functions host.
* Add a version of the counter service that is hosted on the functions host and offers ForkIncrement / PerformIncrement as http bindings.
* update hello world sample to use new feature of functions host
* fix comment
* fix build
* address feedback and update README.md
Sebastian Burckhardt