v1.8.1

Some commands in the mvt command line tool got some new export/output options:

-oC, --compression-level <oC>
                          Output file compression level, between 0=none to 9=best.
-oBe, --buffer-extents <oBe>
                          Output buffer extents for tiles of size 4096.
-oBp, --buffer-pixels <oBp>
                          Output buffer pixels for tiles of size 256. Overrides 'buffer-extents'.
-oSe, --simplify-extents <oSe>
                          Simplify output features using tile extents.
-oSm, --simplify-meters <oSm>
                          Simplify output features using meters. Overrides 'simplify-extents'.