tanaka 0.1.3

Minor changes

• Changes to accomodate sf >= 0.9 and st_make_valid no longer in lwgeom

tanaka 0.1.2

Minor changes

• Changes to accomodate sf >= 0.9 and new representations in PROJ.

tanaka 0.1.1

Minor changes

• addition of add argument in tanaka() to add a tanaka layer to and existing plot.
  
• addtition of reference to Tanaka paper.
• better description of the package (?tanaka)
• add param to correct north arrow
• cleaner raster to matrix transformation in tanaka_contour()
• add reference to GH repo for URL and issues
• use lintr and goodpractice