Added slow exit timer function: At the end of the dive the final ascent to surface should be done slowly. The new function provides a comparison of the current divers depth compared to a linear ascent simulated by the OSTC. The visualization is shown instead of the ascent speed with a little different appearance. The linear ascent is starting from the last stop depth and the time for the ascent may be configurated in the deco settings. The simulated and real peth is compared and the depth color changes based on the difference of the values. In case the diver is much below the timer depth then the timer will stop and wait for the diver to follow.

README.linux
------------

1. Compile the pack utilities

cd src
make checksum_final_add_fletcher
make OSTC4pack_V4

2. Edit create_full_update_bin.sh

Set BUILD_PATH to the location where you build the individual parts
of the firmware using the OpenSTM23 IDE. 

Set BUILD_TYPE the either Debug or Release (or any other build style you 
defined in the OpenSTM23 IDE).

Set the "build project names" as defined in the OpenSTM23 IDE.

3. Simpy run create_full_update_bin.sh

Run it in the ostc4pack folder of the repository, and a file with name
like OSTC4_<date>.bin is created containg the individual blobs.