Change default flush behavior

🐛 Change default folder from "./" to "." to work on more OS's
♻️ Add and change default flushing behavior to "None", meaning no auto-flushing will be done

Fix bug with file system

🐛 Use os.path.join instead of +, which is safer to use.

Add support for datetime serialization

✨ This release adds support for datetime serialization when writing to a log file.

Rename package to jsonfilelogger

🚚 Rename to jsonfilelogger

Initial release

This is the initial LogWriter/LogReader release.