Version bump to 0.9.1.pre
Sending an annual reminder now works correctly when sending reminer to a single applicant from the applicant page
Applicants who are not enrolled or reviewed are no longer given a default status of "current" when modified by an administrator
Removed deprecated applicant fields, `degrees_earned_old`, `concentration_major`, `advisor`, `thesis`, `degree_types`.
Version 0.9.1 finalized