Version 2.16.0

Added

• The PBF reader and writer now understand PBF blobs compressed with the LZ4 compression algorithm in addition to the usual ZLIB compression (or no compression at all). LZ4 is much faster to compress and uncompress. Use by setting the pbf_compression output file format option to lz4. You have to define OSMIUM_WITH_LZ4 to enable this before including any libosmium includes.
• The function osmium::io::supported_pbf_compression_types can now be used to get a list of all PBF compression types supported.
• The output file option pbf_compression_level can now be set to an integer. The range depends on the compression type used, 0-9 for zlib compression and 1-65537 for lz4 compression.
• Adds ptr_begin()/ptr_end() functions to ObjectPointerCollection for accessing the pointers instead of the underlying objects.

Changed

• The osmium::io::Writer::close() function now returns the number of bytes written to an OSM file if it is available (and 0 otherwise).
• Use stable sort when sorting ObjectPointerCollection.

Fixed

• Various small fixes and cleanups.