Be more careful to retry when the feature count is exceeded (#257)

* Clip before dealing with multiplier or filters in overzoom

* Be more careful to retry when the feature count is exceeded

* Adjust the estimated total feature count for the multiplier too

* Fix the feature count estimates, I think

* Pass build info into the version string

* Report the actual max zoom of any tiles as the metadata maxzoom

* Revert unneeded renaming to make the diff more readable

* Clean up the adjustments to tile sizes and feature counts

* Update version and changelog

* Dropping a feature into a multiplier cluster still effectively drops it

* Update changelog

* Rethink the changelog description

* Don't try to truncate zooms if we are still tiling at z18

main.cpp

@@ -49,7 +49,6 @@
 #include "tile.hpp"
 #include "pool.hpp"
 #include "projection.hpp"
-#include "version.hpp"
 #include "memfile.hpp"
 #include "main.hpp"
 #include "geojson.hpp"
@@ -3608,7 +3607,7 @@ int main(int argc, char **argv) {
 		}
 
 		case 'v':
-			fprintf(stderr, "tippecanoe %s\n", VERSION);
+			fprintf(stderr, "tippecanoe %s\n", version_str().c_str());
 			exit(EXIT_SUCCESS);
 
 		case 'P':