Syjson

- Bug fixes
- implemented use of orjson
- Removed bson

Redefined the whole communication beetween synced object and SyJson object
- Added cache option, allowing fast read and write operation

- reimplemented bson option for encode the synced file
- chosen the pybson lib avoiding conflict with pymongo

This update delete the 1.2 update due to incompatibilities between bson and pymongo, syjson don't support bson.

Install this library version on pypi with pip3 install syjson==1.1.4