MOD, EAD etc calculations for CCR

[Willem Ferguson]

Robert,

The calculation of MOD, EAD and the like that happens in profile.c does 
not work for CCR because it is based on the gas mix info associated with 
individual cylinders. Function gas_mod in dive.h is a case in point. I 
was starting to mess around with these calculations to use dynamic fo2 
values for each point on the dive profile (instead of fixed 
cylinder-specific fo2 values), but then I saw that this function is used 
in many places, including extensively in the planner.

Would you be prepared, at all, to look at this problem with respect to 
calculation of these values for CCR? What do you think is feasible?
Kind regards,
willem