Develop algorithm to truncate noise at the end of dives

[pridkett]

When looking at the dive log information on the computer itself the dives are often much shorter than when looking at the data, this is because it truncates the noise at the end of the dive when you're bobbing up and down in the waves before you get out.

I'm thinking that an optional algorithm that works like this might be a good solution:

If the current depth is 0m and there are no later points where the depth is > 1m then stop recording waypoints for the dive.