refs #9428. Basic algorithm with tests.
refs #9428. Working on adding face-touching neighbour finding.
refs #9428. Extend functional and performance tests.
refs #9428. Extend interface to include new find signature.
refs #9428. Use face neighbour finding and test.
refs #9428. New utility PeakClusterProjection.
refs #9428. Extended tests for PeakClusterProjection.
refs #9428. Fix errors and tests.

Error in IntegratePeaksUsingClusters test introduced (previously) and now fixed.
Windows disambiguation of exact enum to use.
refs #9428. Swap in PeakClusterProjection into integration.

refactoring step. Common code usage.
refs #9428. More tests and performance tests.

Increase test coverage. Add performance tests, and refactor the implementation a little.
refs #9428. Fix type conversion warnings.
refs #9428. Fix SignalRangeTest.h Iterator usage.
refs #9428. Fix doxygen warning.
refs #9428. Fix type comparison warning.
refs #9428. Fix type doxygen warning.
Merge remote-tracking branch 'origin/feature/9428_find_cluster_edges'