Deprecate/remove Read/WriteIGSLandmarks and IGSLandmarkList to nat package
Fix bug introduced in CMTKParamsToCMTKRegistration when deprecating
Merge branch 'master' of github.com:jefferis/AnalysisSuite

* 'master' of github.com:jefferis/AnalysisSuite:
  Fix issue when loading surface that has regions containing 0 triangles
  Fix typos
remove core neuron methods and deprecate transform.neuron, transform.points3d and transform.dotprops
remove core dotprops methods
deprecate DotProperties
move to nat: neuronlist, is.neuronlist, as.neuronlist, [.neuronlist, nlapply, plot3d.neuronlist