2022-01-12 Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.22
	- Library version: 1.65.0

	- TreeDBM::TuningParameters has page_update_mode.

2021-12-01 Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.21
	- Library version: 1.64.0

	- Add tkrzw_dbm_check method.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.28
	- tkrzw-python: 0.1.28
	- tkrzw-ruby: 0.1.28
	- tkrzw-go: 0.1.28

2021-11-01 Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.20
	- Library version: 1.63.0

	- Improve efficiency of CompareExchange.
	- compare_exchange_and_get is added.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.27
	- tkrzw-python: 0.1.27
	- tkrzw-ruby: 0.1.27
	- tkrzw-go: 0.1.27

2021-10-20 Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.19
	- Library version: 1.62.0

	- Fix compilation errors with older GooleTest libraries.
	- Support DBM::ANY_DATA as the parameters of CompareExchange.
	- The found parameter is added to CompareExchange.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.26
	- tkrzw-python: 0.1.26
	- tkrzw-ruby: 0.1.26
	- tkrzw-go: 0.1.26

2021-10-12 Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.18
	- Library version: 1.61.0

	- Add SignalBroker and SlottedSignalBroker.
	- Iterator::Set and Iterator::Remove take pointers to store the old value.
	- Add Iterator::Step.
	- Add DBM::PopFirst and DBM::PushLast.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.25
	- tkrzw-python: 0.1.25
	- tkrzw-ruby: 0.1.25
	- tkrzw-go: 0.1.25

2021-10-06 Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.17
	- Library version: 1.60.0

	- Fix a bug of MemoryMapFile::Truncate.
	- Abolish File::LockMemory and --lock_mem_buckets parameter of HashDBM.
	- Fix bugs in AsyncDBM::Synchronize and AsyncDBM::Rebuild.

2021-10-01  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.16
	- Library version: 1.59.0

	- MakeRelativeTimeExpr is added.

2021-09-29  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.15
	- Library version: 1.58.0

	- MessageQueue::Reader::Wait is added.

2021-09-23  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.14
	- Library version: 1.57.0

	- tkrzw_ulog_util command is added.
	- MessageQueue::UpdateTimestamp is added.
	- MessageQueue::OverwriteThreadServerID is added.
	- DBM::GetUpdateLogger is added.

2021-09-20  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.13
	- Library version: 1.56.0

	- MessageQueue uses PositionalParallelFile.
	- MessageQueue supports auto restoration.
	- PositionalParallelFile supports disabling preliminary allocation.

2021-09-20  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.12
	- Library version: 1.55.0

	- File::OPEN_SYNC_HARD is added.
	- On-memory databases uses File::OPEN_SYNC_HARD for exporting records.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.23
	- tkrzw-python: 0.1.23
	- tkrzw-ruby: 0.1.23
	- tkrzw-go: 0.1.23

2021-09-18  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.11
	- Library version: 1.54.0

	- Fix overflow bugs on 32-bit systems.
	- Fix memory leak bug in MemoryMapFile::Synchronize.
	- GetModificationTime is renamed to GetTimestamp.
	- PolyDBM supports parameters to enable update logging.
	- FlatRecord supports the data type selection for metadata.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.22
	- tkrzw-python: 0.1.22
	- tkrzw-ruby: 0.1.22
	- tkrzw-go: 0.1.22

2021-09-10  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.10
	- Library version: 1.53.0

	- Add features for update logging.
	- File::IsOpen is added.
	- Add the message queue class.

2021-09-08  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.9
	- Library version: 1.52.0

	- Fix a potential race condition of TreeDBM::Rebuild.

2021-09-06  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.8
	- Library version: 1.51.0

	- Add RESTORE_NO_SHORTCUTS and RESTORE_WITH_HARDSYNC to the restore options.

2021-08-31  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.7
	- Library version: 1.50.0

	- CopyFileData supports sync_hard option.
	- tkrzw_dbm_util supports --multi flag.
	- Fix compilation errors on Windows.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.21
	- tkrzw-python: 0.1.21
	- tkrzw-ruby: 0.1.21
	- tkrzw-go: 0.1.21

2021-08-27  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.6
	- Library version: 1.49.0

	- PolyDBM::RebuildAdvanced supports skip_broken_records and sync_hard parameters.
	- Extra metadata and time are printed by tkrzw_dbm_util.
	- The inspect subcommand of tkrzw_dbm_util supports a filter.
	- Remove useless virtual modifiers.

2021-08-26  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.5
	- Library version: 1.48.0

	- GetInternalFile is added to TinyDBM, BabyDBM, StdHashDBM, and StdTreeDBM.
	- TreeDBM::Rebuild has the restore parameter.

2021-08-25  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.4
	- Library version: 1.47.0

	- Clean up Makefile.
	- HashDBM::Synchrhonize syncs the record metadata section properly.
	- TinyDBM, BabyDBM, StdHashDBM, and StdTreeDBM exports data atomically.
	- Guard pwrite, pread, ftruncate against EINTR.

2021-08-23  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.3
	- Library version: 1.46.0

	- Add time utilities.

2021-08-19  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.2
	- Library version: 1.45.0

	- Tune parameters for HashDBM for better concurrency.
	- Tune parameters for TreeDBM for better concurrency.
	- NETWORK_ERROR is added to the Status codes.
	- Fix a bug of SearchMap.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.20
	- tkrzw-python: 0.1.20
	- tkrzw-ruby: 0.1.20
	- tkrzw-go: 0.1.20

2021-08-16  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.1
	- Library version: 1.44.0

	- Use xmallocaligned uses posix_memalign on POSIX systems.
	- Optimize MemoryMapParallelFile and MemoryMapAtomicFile to reduce malloc calls.
	- Fix a bug of TruncateFakely when increasing the file size.
	- Optimize tkrzw_dbm_perf to check memory allocation accurately.
	- Add methods to FileIndex.

2021-08-09  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 1.0.0
	- Library version: 1.43.0

	- Refactoring.

2021-08-08  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.52
	- Library version: 1.41.0

	- Rebuild is guarded by try lock.
	- FreeBlockPool is guarded by SpinMutex.

2021-08-07  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.51
	- Library version: 1.39.0

	- Refactoring.

2021-08-02  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.50
	- Library version: 1.39.0

	- tkrzw_thread_util becomes a template library.
	- Use spin lock mutexes for performance.

2021-07-28  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.49
	- Library version: 1.38.0

	- Add exporting methods to the asynchronous API.
	- Rename some exporting methods.
	- Add GetTypeExtra to StatusFeature.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.17
	- tkrzw-python: 0.1.17
	- tkrzw-ruby: 0.1.17
	- tkrzw-go: 0.1.5

2021-07-26  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.48
	- Library version: 1.37.0

	- Add StatusFuture class for the asynchronous API.
	- Add asynchronous API to the C interface.

2021-07-25  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.47
	- Library version: 1.36.0

	- Fix compilation warnings on Mac.
	- Add TKRZW_PAGE_SIZE constant to the C interface.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.16
	- tkrzw-python: 0.1.16
	- tkrzw-ruby: 0.1.16
	- tkrzw-go: 0.1.2

2021-07-23  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.46
	- Library version: 1.35.0

	- Fix a bug of RestoreDatabase on systems with the page size more than 4096, like M1 Mac.
	- Add string utilities to the C interface.

2021-07-17  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.45
	- Library version: 1.34.0

	- AsyncDBM supports callback functions.

2021-07-15  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.44
	- Library version: 1.33.0

	- tkrzw_dbm_tran supports asynchronous operations.

2021-07-13  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.43
	- Library version: 1.32.0

	- Add SearchDBMOrder method.
	- Add AsyncDBM class.
	- Add AppendMulti method.
	- Modify signature of GetMulti method.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.14
	- tkrzw-python: 0.1.14
	- tkrzw-ruby: 0.1.14

2021-07-11  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.42
	- Library version: 1.31.0

	- Exporting functions are added to the C language interface.
	- Fix a compilation error on Windows.

2021-07-09  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.41
	- Library version: 1.30.0

	- Fix a bug of memory corruption of tkrzw_dbm_tran.
	- Fix a metadata inconsistency of TreeDBM.

2021-07-08  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.40
	- Library version: 1.29.0

	- Add regex utility functions.
	- Add utility functions to the C interface.
	- Modify API of SearchDBMModal.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.12
	- tkrzw-python: 0.1.12
	- tkrzw-ruby: 0.1.12

2021-07-07  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.39
	- Library version: 1.28.0

	- The C language interface supports the generic file implementation.
	- Improve efficiency of the restore operation.

2021-07-04  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.38
	- Library version: 1.27.0

	- Add search and restore features to the C interface.
	- Add utility functions to know memory usage.
	- Add a command to check the C interface functionality.

2021-07-02  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.37
	- Library version: 1.26.0

	- Add the C language interface.
	- Efficiency of auto restore is improved.

2021-07-01  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.36
	- Library version: 1.25.0

	- Efficiency of auto restore is improved.

2021-06-29  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.35
	- Library version: 1.24.0

	- Auto restore feature of HashDBM becomes more efficient.
	- The database format of HashDBM is changed to be more resilient to I/O failures.
	- The database format of SkipDBM is changed to be more resilient to I/O failures.

2021-06-26  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.34
	- Library version: 1.23.0

	- HashDBM::VaridateRecords is added.
	- CopyFileData supports copy-on-write backup on BtrFS and XFS.

2021-06-21  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.33
	- Library version: 1.22.0

	- Checksum is embedded in the record header of HashDBM.
	- Format of record padding is changed in HashDBM.
	- Hash functions are moved from tkrzw_lib_common.h to tkrzw_hash_util.h.
	- Performance of CRC-32 is improved if zlib is enabled.

2021-06-20  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.32
	- Library version: 1.21.0

	- A restore mode "RESTORE_READ_ONLY" is added.
	- Abolish the ChechHashChain feature.
	- Fix a bug of race condition between ProcessMulti and Rebuild.

2021-06-19  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.31
	- Library version: 1.20.0

	- "tkrzw_dbm_util restore" supports in-place restoration.
	- Performance of HashDBM::Set and HashDBM::Remove is improved.

2021-06-18  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.30
	- Library version: 1.19.0

	- Data compression features are added.

	- Confirmed compatibility of the compression libraries
	- zlib 1.2.11
	- libzstd 1.4.5
	- liblz4 1.9.2
	- liblzma 5.2.4

2021-06-14  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.29
	- Library version: 1.18.0

	- Parallelism of ProcessMulti and ComareExchangeMulti of ShardDBM is improved.

2021-06-13  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.28
	- Library version: 1.17.0

	- Fix a bug of interface of the Murmur hash function.
	- Avoid reading too large data from the file.

2021-06-12  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.27
	- Library version: 1.16.0

	- Add record CRC modes to detect data corruption.
	- Add a performance test for hash functions.

2021-06-11  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.26
	- Library version: 1.15.0

	- Improve ability to detect corrupt records on restoration.
	- Add CRC functions.
	- The record header section has static_flags.

2021-06-08  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.25
	- Library version: 1.14.0

	- Auto recovery supports metadata brokage.
	- Add a command to check transaction features.
	- Add SkipDBM::ReduceToTotalBigEndian.
	- Fix a bug that Rebuild performance has inefficiency.
	- PolyDBM returns dummy iterators for unopened databases.

2021-06-05  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.24
	- Library version: 1.13.0

	- Add cyclic metadata to HashDBM and SkipDBM.
	- SkipDBM::FinishStorage becomes more robust.
	- PageCache supports partial flush.
	- Performance of HashDBM::Synchronize improves.

2021-05-30  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.23
	- Library version: 1.12.0

	- Add ReadMetadata and ParseMetadata methods.
	- Ability of RestoreDatabase metdhods to recover the file is improved.
	- Modify Makefile.in to support build operations in a subdirectory.
	- Add parameters for the offset and the size to File::Synchronize.
	- Performance of synchronizing the database file is improved.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.10
	- tkrzw-python: 0.1.10
	- tkrzw-ruby: 0.1.10

2021-05-29  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.22
	- Library version: 1.11.1

	- Fix a bug of the page cache for block I/O.

2021-05-25  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.21
	- Library version: 1.11.0

	- Add DBM::RemoveMulti method.
	- Solve compilation warnings on Mac OS.
	- Support direct I/O on Mac OS.
	- Support multi record atomic transaction on HashDBM.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.9
	- tkrzw-python: 0.1.9
	- tkrzw-ruby: 0.1.9

2021-05-24  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.20
	- Library version: 1.10.0

	- Add fine tuning parameters for random access on POSIX.

2021-05-15  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.19
	- Library version: 1.9.0

	- Performance of direct I/O is improved.
	- Add min_read_size to HashDBM::TuningParameters.

2021-05-15  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.18
	- Library version: 1.8.0

	- Fix a bug of cache_buffer on read-only direct I/O mode.
	- Performance of reading record is improved when alignment is set.
	- Performance of writing page cachees is improved.

2021-05-14  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.17
	- Library version: 1.7.0

	- "lock_mem_buckets" and "cache_buckets" parameters become integers.
	- Add the page cache system to improve direct I/O performance.
	- PolyDBM supports padding and pagecache options for direct I/O.
	- SkipDBM keeps file properties across Synchronize and Rebuild.
	- Remove debug messages inside the library.

2021-05-12  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.16
	- Library version: 1.6.0

	- Support direct I/O on SkipDBM.
	- Add PositionalFile::ACCESS_PADDING which aligns the file size for direct I/O.
	- Add logic to open database files which has padding bytes at the end of the file.
	- Fix compilation error no Mac OS due to aligned_alloc.
	- Abolish using std::filesystem package to support GCC 7 or earlier.
	- Omit test cases by default to support systems which don't support direct I/O.

2021-05-11  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.15
	- Library version: 1.5.0

	- Add features to do direct IO on Linux.
	- Positional access file classes support block IO and head caching.
	- Fix a bug in tkrzw_file_test_common.h where Synchronize shouldn't be called.
	- Rebuild method keeps space allocation strategy and other properties of the file.

2021-05-06  Mikio Hirabayashi  <hirarin@gmail.com>

	- Release: 0.9.14
	- Library version: 1.4.0

	- Performance of file classes on Windows improves.

	- Compatibility of the language interfaces
	- tkrzw-java: 0.1.7
	- tkrzw-python: 0.1.7
	- tkrzw-ruby: 0.1.7
