Added CanEqual method override to EmpiricalSeq, improved relevant
testing in EmpiricalSeq and EmpiricalTable
Added a new example based on the NCP faeces/dust test sensitivity work
Merge branch 'develop' of https://github.com/tearne/Sampler into develop
Merging previously uncommitted changes
Merge branch 'develop' of https://github.com/tearne/Sampler.git into
develop

Conflicts:
	core/src/main/scala/sampler/data/EmpiricalSeq.scala