corrected to allow for none of the options
Uses irf timetables; includes a try statement to skip timetables without any data
corrected error in wave association
wave events are now chosen to be 5 times larger than the background median rather than an order of magnitude larger
Merge branch 'devel' of github.com:irfu/irfu-matlab into devel

Conflicts:
	+maarble/c_ulf_process.m
Merge branch 'devel' of github.com:irfu/irfu-matlab into devel