Mostly CRAN fixes
Version 0.1.17
- Introduce 'default_label_name' parameter to read.fs.annot, better doc string for the same function.
- Add function fs.surface.to.tmesh3d to transform an fs.surface mesh datastructure into an RGL tmesh datastructure. This method does not require rgl.
- Replace all 'donttest' in examples with 'dontrun' so CRAN does not run them.