SDF parser now flips data of backward scan to make comparison with forward data easier
OMG typo in last commit
Manually integrated Zeno's changes to parse both backward and forward channels in SXM parser
Saves 95% confidence interval bounds in UserData of InteractiveFit object
Few changes here and there
getChannelInfo show units and direction for userChannel
oops... fix
Figure title show direction of scan by default
Substract operation gives a more informative name by default
Quick fix to get rid of the warning message when writing XML
UserChannelByName throws error if empty
Renamed correctDissipation to correctBackground

Also a more informative default name to the resulting channel
Fixed cache retrieval in correctBackgroud
Default figure title is channel name
viewerModule\view.m not independent of SPM.viewer

Furthermore, it accepts extra arguments in its constructor like a figure
for example. Useful if you want to plot things in an invisible figure
when batch processing.
Updated test to comply with changes on sxm parser
nanonispectrum parser prepare headers struct the way sxm parser does
Add channel function
Fix whitespace in error message
Test