Known issue with measured pO2 reported by some CCR dive computers

While this won’t affect the majority of our users, for those diving rebreathers with connected dive computers that measure and report pO2 during the dive (e.g. Shearwater Predator and Petrel): there is a bug in the way we store the pO2 in our data files. This bug causes us to corrupt some of the pO2 values in our data file; this often creates odd spikes in the pO2 graph.

A version 3.0.2 that fixes that should be out within the next day or two -- the goal is that users affected simply need to re-download their dives from their dive computer with that updated version of Subsurface; that should correct the problem without any data loss. We still need to do some more testing to make sure that does indeed work as intended.