1.29.0 -- Stim update (#32)

* Change uses of stim "values" to "amps" or "amplitudes" in method names

* Added 'states' propery to StimClass, added getter, setter, and initializer methods and added states to old ones

* Added hmrR_GLM_new

* Fix to SnirfClass GetStims

* Fix in new version of SnirfClass GetStims

* Removed ability to toggle stim state from StimEditGUI

* Changes to SnirfClass MoveStims to support new data dimensions

* Snirf indefinite column stim data support

* Removed attribute testing block

* dataLabels support re: latest SNIRF spec. Edits to AddStims and SetData to ensure stim array is always sorted properly for easy edit with table

* Suppressed debug stuff

* fallback to default column titles for no dataLabels

* Stim toggle interface in MainGUI

* PatchCallback no longer toggles stims

* Fix crashes and visual errors when the cond list is empty

* User function for filtering stims based on any of their values, incl additional scalar columns recently added to SNIRF

* Error checking on dataLabels setter

* hmrR_StimCriteria

* Button for editing extra column names. Still no way to add or remove them

* Fix to UpdateStim method for no original stim case

* Version number

* Ensure exclude regions are visible to user

* Fixed line endings in StimClass for better diff

* Fixed SnirfClas GetStims

* Changed errmargin

* Edit columns button

* Fixed a bug which caused aux plot to fail in stimEditGUI if aux offset wasn't defined

* Removed cond name 1 char limit; MenuBox no longer crashes on window close

* MainGUI.fig merge; add checkboxExcludeStims to EnableDisable fn

* Constructor converts nirs-style values into state values