* fix missing fields in custom prog balancing option
* fix typos and pep8
* update and implement pyevermizer 0.41.3
* allow randomizing energy core
* add energy core fragments (turn in at Prof. Ruffleberg)
* rename some items to avoid confusion
* differentiate between progression and useful
* remove obsolete 'Bazooka' group
* don't add items to the pool that get removed