* Remove no longer required base package
* Do not include Python module anymore; it is not built by default by
the upsteam build script anymore (only if CMake variable SKBUILD is set)
and thus supposedly designed to be distributed in a separate package; this
makes also sense at it avoids rebuilding the C library on every minor Python
release
* Rebuild subtitlecomposer; however, at this point this means its speech
plugin will not be available anymore as even the detection of the library
does not work:
```
-- Could NOT find PocketSphinx (missing: POCKETSPHINX_INCLUDE_DIR) (found suitable version "5.0.0", minimum required is "5")
-- Have NOT Found PocketSphinx - Speech plugin will not be built
```