be explicit about shapeType
rename _shpfuncs to reflect private status; add dbase type conv function
fix field type identification and add tests
provide a method to write a single feature shapefile to all multipoint
geometries
add 3d versions of shapfile writing methods
add _len attribute to Metadata to track length in Python 3
ensure vertices are a list after shift and add test
rewrite write_shapefile and add tests
remove duplicated code
version 0.2.0

justified because of shapefile refactor

added pyshp to requirements and gave pyproj a version