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Ignore build dir
Use individual Q_SIGNAL keyword to mark signals

Necessary for next refactor
Refactor to be able to keep all comments

This ensures comments containing @endcond keywords are not skipped
Fix remaining add_comment() calls
Add fromsrc.py to ensure we always run code from the source tree if available
Fix broken signal handling

Doxygen does not yet (1.8.4) support the single-line Q_SIGNAL macro.
Move unit tests to tests/unit
Add integration tests
Only test Doxyqml, not Doxygen
This is more like functional testing now
Avoid error caused by vim swap files
Fail if a file does not have a ".cpp" extension
Add ability to run one test and to update expected output of a test
Run tests using the doxyqml executable from the source tree