mtbl (1.0.0)

 * Backwards-incompatible file format change to enable block sizes >4G.
 * Add support for zstd compression. This adds a new library dependency
   on libzstd.
 * Add mtbl_iter_seek function.
 * Add mtbl_fileset_partition function.
 * Breaks ABI for version 0.x.x.

mtbl (0.8.1)

 * Add portability for clock time.
 * Simplify and improve portability related to byte order primitives.
 * Fix assertion failure. If there is a broken mtbl file in the fileset
   then a NULL reader will be returned. This change checks for that
   error condition in fs_reinit_merger() and does not pass the empty
   reader onwards to mtbl_merger_add_source().