Erik Arvstedt bd75a65866 Refactor: renamings, extract fn 'loop'
Renamings:
loop -> loop_step
delta -> next_mail_time (this variable names a point in time, not a duration)

Extracting the 'loop' fn is a preparation for later commits where a
second type of loop is added.
2018-05-11 14:14:25 +02:00
..
2015-12-20 19:23:33 +00:00