Preserving intersection nodes; consistent longitude wraparound; more efficient shell filters

1.34.3

• Add an option to keep intersection nodes from being simplified away

1.34.2

• Be more consistent about when longitudes beyond 180 are allowed.
  Now if the entire feature is beyond 180, it will still appear.

1.34.1

• Don't run shell filters if the current zoom is below the minzoom
• Fix -Z and -z for tile directories in tile-join and tippecanoe-decode
• Return a successful error status for --help and --version