Merge upstream version 0.8.0 into our libdc fork.
Since we tracked the development branch, we already had merged all the
main changes, but it's been a couple of months since the last upstream
merge, and there were a few new changes upstream:
- Divesoft Freedom and Liberty support
- A couple of iostream abstraction layers: a new 'packet layer' and a
HDLC layer, moving code from low-level dive computer downloaders to
generic iostream layers.
- misc minor updates
* tag 'v0.8.0': (25 commits)
Release version 0.8.0
Fix the date of the v0.7.0 release
Add a missing filter for the Aqualung i750TC
Reduce the BLE output packet size to 20 bytes again
Integrate the new packet I/O in the backends
Add a generic packet I/O implementation
Fix a typo in the documentation
Add support for the Divesoft Freedom and Liberty
Integrate the HDLC stream in the eonsteel backend
Add a generic HDLC I/O implementation
Remove the local endianess functions
Use the correct function to free resources
Add the udev rules to the distribution tarball
Add a README file to the contrib directory
Include the revision in the Visual Studio and Android builds
Don't generate the Windows version resource
Move the Visual Studio project to the contrib directory
Add a basic Android build system
Disable the getopt argument permutation on Android
Move the sign extension function to a common place
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