tweaked sliding
added check if all semi-landmarks are correctly tagged
made creation of U sparse
added check whether all semi-landmarks are declared either as outlines or surfaces.
code cleaning in tweakU.cpp
tidy up in CreateL
more tweaking and code profiling in sliding subroutines
removed unnecessary output from calcGamma (legacy debug stuff)
reenabled weights in calc_Tang_U
fixed ignore option if missingList is specified
more speed and memory tweaking in generating Lsubk3 and by forcing L to be symmetric
removed unused output of L from CreateL
fixed stuff I accidentally broke by the intensive usage of the Matrix class
added explicit garbage collection to relaxLM
some tweaking on memory footprint
fixed issues in examples
ran roxygen
bunped version
added orientation check of pcAlign to avoid reflections
added sliding to minimize Procrustes distance (relaxLM and slider3d)