Sanity check wavelength
attempt to fix problems associated with missing photon energy
Merge branch 'developer' of github.com:antonbarty/cheetah into developer
remove printf debug statements
Helper scripts that list *all* cheetah keywords
Fix resolution limit mask
Squash compilation warning messages
framesorter can now print sort fields
Add hitfinderInvertHit tag (i.e. save non-hits)
Write frame number, not fiducial, to hdf5 filenames
Back to fiducials in filenames, when present, but with small formatting change

In the previous convention, filenames tend not to be listed in chronological
order.  This is now fixed.
Remove unnecessary output
Start to add tests using the Google Testing Framework.
Add first full system test
Make sure error exit codes are != 0
Fix a couple of memory leaks
Release CXI object only at close
Fix uninitialized values
Do not call exit at the end, as it prevents destructors from running.
Add a memcheck test