Frame_params: 3DR_Iris+ reduced WP_NAV to 650
Copter: fix RSSI_RANGE param values

The extra .0 after the 5 was causing the mission planner to not display
5V in the dropdown even though the value was 5.
Copter: add AC3.2 default to LOG_BITMASK value
Copter: bugfix to condition-yaw for relative angles

Thanks to roque-canales for raising the issue and paradisephil for finding
the specific piece of code that went wrong and suggesting the fix.
Mission: fix CHANGE_ALT to store climb rate in lat param

The slightly confusing storage of climb rate in the lat field led to a
bug fix a few months ago that actually created a bug.