1.3.0

• IMPORTANT: Java 7 is now required. If you need Java 6 support, please
  continue using 1.2.2 or earlier.
• The method getRecord was added to com.maxmind.db.Reader. This method
  returns a com.maxmind.db.Record object that includes the data for the
  record as well as the network associated with the record.

1.2.2

• Remove the version range. As of today, jackson-databind is no longer
  resolved correctly when a range is used. GitHub #28.

1.2.1

Specify a hard minimum dependency for jackson-databind. This API will not work with versions earlier than 2.7.0, and Maven's nearest-first resolution rule often pulled in older versions.

1.2.0: Immutable JsonNode Containers

• JsonNode containers returned by the get(ip) are now backed by
  unmodifiable collections. Any mutation done to them will fail with an
  UnsupportedOperationException exception. This allows safe caching of the
  nodes to be done without doing a deep copy of the cached data. Pull request
  by Viktor Szathmáry. GitHub #24.

1.1.0: Optional Caching and Performance Improvements

• The reader now supports pluggable caching of the decoded data. By default,
  no caching is performed. Please see the README.md file or the API docs
  for information on how to enable caching. Pull requests by Viktor Szathmáry.
  GitHub #21.
• This release also includes several additional performance enhancements as
  well as code cleanup from Viktor Szathmáry. GitHub #18, #19, #20, #22,and
  #23.

1.0.1: Performance Optimizations

• Several optimizations have been made to reduce allocations when decoding a
  record. Pull requests by Viktor Szathmáry. GitHub #16 & #17.

1.0.0

• First production release.

0.4.0

• Made com.maxmind.db.Metadata public and added public getters for most
  of the interesting metadata. This is accessible through the getMetadata()
  method on a Reader object.

0.3.4

• Previously the Reader would hold onto the underlying file and FileChannel,
  not closing them until the Reader was closed. This was unnecessary; they
  are now closed immediately after they are used. Fix by Andrew Snare; GitHub
  issue #7.
• The Reader now discards the reference to the underlying buffer when
  close() is called. This is done to help ensure that the buffer is garbage
  collected sooner, which may mitigate file locking issues that some users
  have experienced on Windows when updating the database. Patch by Andrew
  Snare; GitHub issue #8.

0.3.3

• A potential (small) resource leak when using this library with a thread
  pool was fixed.