roxygenise with roxygen2 v3.1

* breaks because scale.ts is now treated as a method (which is what it looks like)
partial fix for scale.ts check warnings

* still doesn't work because scale generic does not have ... in signature
fix PlotOdourResponseFromSpikes no longer insists on a baselineWindow

* fixes #1
Change PlotFrequency arg to freq

* fixes #2
remove yrange argument from scale.ts

* also fix a couple of bugs relating to renamed waves variable
* closes #3
Prepare v0.8
Merge branch 'release/0.8' into develop

* release/0.8:
  Prepare v0.8