refresh on 00:01 instead of 00:00
separate text.c
fix removing same layer twice
separate data.c
extract text_layer_create_default
remove repeated conditional
extract format_date
use stdbool
extract constant NEXT_CLASS_SUBJECT_SIZE
extract constant NEXT_CLASS_TIME_SIZE
enhance debug logging
use a struct for class events
access next_class_event via function
extract set_class_text
extract current_time
download schedule for the whole day to the watch