Add DataSet metadata to PeakCollection
- had to remove all looping over numors during peak finding/integration since this is incompatible
- Now PeakCollection construction requires either a sptrDataSet argument or calling the setData method
- DataSet name is saved to PeakCollection metadata, so that link is made after importing from HDF5
- Propagated API changes to python tests
- Removed most remaining instances of the word "numor" to help future developers
Resolves #98 (closed), #575 (closed)
Edited by Zamaan Raza