v3.2

fix #6 , Latest read feature, cleanup

* Added FileManagers, now different file versions can be read with the same method call. #6
* Seperated concerns: architecture consists of DiaryController, Diary, Entry and FileManager classes.
* Set up `diary read latest` feature
* Set up tests
* added ignore files

3.1: update search display

Although made only intended for my use, I believe this can be fairly used by anybody.