## 1.14.4
* Make -B/-r feature-dropping consistent between tiles and zoom levels
## 1.14.3
* Add --detect-shared-borders option for better polygon simplification
## 1.14.2
* Enforce that string feature attributes must be encoded as UTF-8
## 1.14.1
* Whitespace after commas in tile-join .csv input is no longer significant
## 1.14.0
* Tile-join is multithreaded and can merge multiple vector mbtiles files together
## 1.13.0
* Add the ability to specify layer names within the GeoJSON input
## 1.12.11
* Don't try to revive a placeholder for a degenerate polygon that had negative area
## 1.12.10
* Pass feature IDs through in tile-join
## 1.12.9
* Clean up parsing and serialization. Provide some context with parsing errors.
## 1.12.8
* Fix the spelling of the --preserve-input-order option
## 1.12.7
* Support the "id" field of GeoJSON objects and vector tile features
## 1.12.6
* Fix error reports when reading from an empty file with parallel input
## 1.12.5
* Add an option to vary the level of line and polygon simplification
* Be careful not to produce an empty tile if there was a feature with
empty geometry.
## 1.12.4
* Be even more careful not to produce features with empty geometry
## 1.12.3
* Fix double-counted progress in the progress indicator
## 1.12.2
* Add ability to specify a projection to tippecanoe-decode
## 1.12.1
* Fix incorrect tile layer version numbers in tile-join output
## 1.12.0
* Fix a tile-join bug that would retain fields that were supposed to be excluded
## 1.11.9
* Add minimal support for alternate input projections (EPSG:3857).
## 1.11.8
* Add an option to calculate the density of features as a feature attribute
## 1.11.7
* Keep metadata together with geometry for features that don't span many tiles,
to avoid extra memory load from indexing into a separate metadata file
## 1.11.6
* Reduce the size of critical data structures to reduce dynamic memory use
## 1.11.5
* Let zoom level 0 have just as much extent and buffer as any other zoom
* Fix tippecanoe-decode bug that would sometimes show outer rings as inner
## 1.11.4
* Don't let polygons with nonzero area disappear during cleaning
## 1.11.3
* Internal code cleanup
## 1.11.2
* Update Clipper to fix potential crash
## 1.11.1
* Make better use of C++ standard libraries
## 1.11.0
* Convert C source files to C++
## 1.10.0
* Upgrade Clipper to fix potential crashes and improve polygon topology
## 1.9.16
* Switch to protozero as the library for reading and writing protocol buffers
## 1.9.15
* Add option not to clip features
## 1.9.14
* Clean up polygons after coalescing, if necessary
## 1.9.13
* Don't trust the OS so much about how many files can be open
## 1.9.12
* Limit the size of the parallel parsing streaming input buffer
* Add an option to set the tileset's attribution
## 1.9.11
* Fix a line simplification crash when a segment degenerates to a single point
## 1.9.10
* Warn if temporary disk space starts to run low
## 1.9.9
* Add --drop-polygons to drop a fraction of polygons by zoom level
* Only complain once about failing to clean polygons
## 1.9.8
* Use an on-disk radix sort for the index to control virtual memory thrashing
when the geometry and index are too large to fit in memory
## 1.9.7
* Fix build problem (wrong spelling of long long max/min constants)
## 1.9.6
* Add an option to give specific layer names to specific input files
## 1.9.5
* Remove temporary files that were accidentally left behind
* Be more careful about checking memory allocations and array bounds
* Add GNU-style long options
## 1.9.4
* Tippecanoe-decode can decode .pbf files that aren't in an .mbtiles container
## 1.9.3
* Don't get stuck in a loop trying to split up very small, very complicated polygons
## 1.9.2
* Increase maximum tile size for tippecanoe-decode
## 1.9.1
* Incorporate Mapnik's Clipper upgrades for consistent results between Mac and Linux
## 1.9.0
* Claim vector tile version 2 in mbtiles
* Split too-complex polygons into multiple features
## 1.8.1
* Bug fixes to maxzoom, and more tests
## 1.8.0
* There are tests that can be run with "make test".
## 1.7.2
* Feature properties that are arrays or hashes get stringified
rather than being left out with a warning.
## 1.7.1
* Make clipping behavior with no buffer consistent with Mapnik.
Features that are exactly on a tile boundary appear in both tiles.
## 1.7.0
* Parallel processing of input with -P works with streamed input too
* Error handling if unsupported options given to -p or -a
## 1.6.4
* Fix crashing bug when layers are being merged with -l
## 1.6.3
* Add an option to do line simplification only at zooms below maxzoom
## 1.6.2
* Make sure line simplification matches on opposite sides of a tile boundary
## 1.6.1
* Use multiple threads for line simplification and polygon cleaning
## 1.6.0
* Add option of parallelized input when reading from a line-delimited file
## 1.5.1
* Fix internal error when number of CPUs is not a power of 2
* Add missing #include
## 1.5.0
* Base zoom for dot-dropping can be specified independently of
maxzoom for tiling.
* Tippecanoe can calculate a base zoom and drop rate for you.
## 1.4.3
* Encode numeric attributes as integers instead of floating point if possible
## 1.4.2
* Bug fix for problem that would occasionally produce empty point geometries
* More bug fixes for polygon generation
## 1.4.1
* Features that cross the antimeridian are split into two parts instead
of being partially lost off the edge
## 1.4.0
* More polygon correctness
* Query the system for the number of available CPUs instead of guessing
* Merge input files into one layer if a layer name is specified
* Document and install tippecanoe-enumerate and tippecanoe-decode
## 1.3.0
* Tile generation is multithreaded to take advantage of multiple CPUs
* More compact data representation reduces memory usage and improves speed
* Polygon clipping uses [Clipper](http://www.angusj.com/delphi/clipper/documentation/Docs/_Body.htm)
and makes sure interior and exterior rings are distinguished by winding order
* Individual GeoJSON features can specify their own minzoom and maxzoom
* New `tile-join` utility can add new properties from a CSV file to an existing tileset
* Feature coalescing, line-reversing, and reordering by attribute are now options, not defaults
* Output of `decode` utility is now in GeoJSON format
* Tile generation with a minzoom spends less time on unused lower zoom levels
* Bare geometries without a Feature wrapper are accepted
* Default tile resolution is 4096 units at all zooms since renderers assume it
## 1.2.0
* Switched to top-down rendering, yielding performance improvements
* Add a dot-density gamma feature to thin out especially dense clusters
* Add support for multiple layers, making it possible to include more
than one GeoJSON featurecollection in a map. [#29](https://github.com/mapbox/tippecanoe/pull/29)
* Added flags that let you optionally avoid simplifying lines, restricting
maximum tile sizes, and coalescing features [#30](https://github.com/mapbox/tippecanoe/pull/30)
* Added check that minimum zoom level is less than maximum zoom level
* Added `-v` flag to check tippecanoe's version