* close method change and fix code
* missing mutex
* wip
* renaming and fixes
* renaming, fixes
* added enablePong/disablePong, add tests
* added new test cases
* add 1 test case
* fix gcd name to greatestCommonDivisor
* move ping and ping timeout checks into socket poll, local var in test cases and indent fixes
* indent issue
* New command line tool for transfering files / still very beta.
* add readme
* use cli11 for argument parsing
* json -> msgpack
* stop using base64 and use binary which can be stored in message pack
