wkb 0.4-0

• Change to which WKB representations SpatialPolygons convert to
  • SpatialPolygons objects now convert to either WKB Polygons or WKB MultiPolygons
    • If each Polygons object in the SpatialPolygons object contains a single Polygon object with only one exterior boundary then convert to WKB Polygon, otherwise convert to WKB MultiPolygon
    • Previously SpatialPolygons were converted to WKB Polygon containing multiple rings
• Make changes for compatibility with R 4.0.0 (#12)

wkb 0.3-0

• Improved performance of function hex2raw() (#10)

wkb 0.2-0

• Added support for big-endian WKB (#2)
• Added function hex2raw() (#4)
• Added tests

wkb 0.1-0

• First CRAN release