Releaselogit

Update .packageit/release.toml with he latest releases notes.

Improve __repr__ to display
- repr must return self.cur_pos and rel_list[self.cur_pos]

Rename class, add new methods and discontinue setup.py
- Add oldest method. Return the first (oldest) release notes
- Add latest method. Return the latest (last) release notes
- Add repr dunder. Return the current release of curr_rel pointer
- Rename the class to ReleaseLogIt because it is a collection (log) of release notes.

Add "write_toml"
- Export the contents to a toml file.

Rename get_release_note to get_release_note_by_title to enable the creation of get_release_note_by_version method

Add "get_tags" method to return a list of tags for the current repo
Rename class attributes to be more relevant or shorter and consistent.
- Rename self.seq -> self.rel_list
- Rename self.release_notes -> rel_notes
- Rename self.element_cntr -> rel_cntr