tectonicr 0.4.8

• NEW: ortensor2d() to calculate summary statistics for axial data
• NEW: data2PoR(): Convenience function to add PoR coordinates and PoR azimuths to data
• NEW: geom_azimuth() and geom_azimuthpoint(): convenience functions to plot directions as bars in ggplot2
• NEW: weighting() convenience function to assign weightings for angles based on optional algorithms
• "N" in rose diagram now in bold
• stacked dot and density function in rose plots are visualized in expended plotting windows
• Deviation is now positive for counterclockwise deviation of observed azimuth wrt. predicted azimuth
• est.kappa() now uses approximation (as precise as original but faster). Original algorithm now in est.kappa.MLE()
• minor bug fix in relative_rotation()
• safe condition checks with isTRUE or isFALSE