new requirements

[FeiLZX3Km]

Very good program!! I love it. But I think this software still has some room for improvement, I don't know if the respected developers can achieve the following requirements:

1. Support saving notes in markdown format;
2. Support the default saving path to a certain folder, no need to reset the note saving location every time you create a new note;
3. Support the default note name format, such as YYYY-MM-DD- (ddd) diary format.