4.7.1 released

[Gaetan Bisson]

Hi Dirk,

Thanks for this new release! I'm ashamed I can't get subsurface-4.7.1 to
compile against the new libdivecomputer-subsurface-branch tarball... I'm
getting errors like this:

In file included from /build/src/Subsurface-4.7.1/core/qt-ble.cpp:18:0:
/build/src/Subsurface-4.7.1/./core/qt-ble.h:57:25: error: 'dc_custom_io_t' was not declared in this scope
 dc_status_t qt_ble_open(dc_custom_io_t *io, dc_context_t *context, const char *name);
                         ^~~~~~~~~~~~~~
/build/src/Subsurface-4.7.1/./core/qt-ble.h:57:25: note: suggested alternative: 'dc_gasmix_t'
 dc_status_t qt_ble_open(dc_custom_io_t *io, dc_context_t *context, const char *name);
                         ^~~~~~~~~~~~~~
                         dc_gasmix_t
/build/src/Subsurface-4.7.1/./core/qt-ble.h:57:41: error: 'io' was not declared in this scope
 dc_status_t qt_ble_open(dc_custom_io_t *io, dc_context_t *context, const char *name);
                                         ^~
[...]

Where is dc_custom_io_t supposed to be defined?

Cheers.

-- 
Gaetan