fix, redundant data wont be plotted into same spectra
Merge branch 'master' of github.com:pymzml/pymzML
Plotted points show now values if mouseover
catching exception when mzml files have no TIC
Last Term omitted

The last 'Term' element was parsed but the collections were not added to the dictionary.
This fix may not be the best solution but solves the problem. 

Thank you for the code.
Merge pull request #11 from mmendez12/patch-1

Last Term omitted
[FIX] recognize chromatograms properly