version 0.1.1

New Features

• mesh_zoomin() is soft-deprecated and replaced by mesh_subdivide().
• mesh_zoomout() is soft-deprecated and replaced by mesh_80km(), mesh_10km(), etc.
• New point_to_mesh(), geometry_to_mesh(), mesh_grid() and bbox_to_mesh().

Others

• Fix the package versions of utils and other imports.
• Update DESCRIPTION and README, and add an explanation of regional mesh codes in Japan.