0.10.x/0.11.x (version-2) -> 0.12.x/0.13.x (version-3)

PR#	Name	Author	Changes
2263	Move memtable plan index from ChunkGroupFooter to a separate marker	jt2594838	Add min/max plan index after MetaMarker.OPERATION_INDEX_RANGE when a memtable is flush
2184	[IOTDB-1081] New TsFile Format	JackieTien97	Please see details
2445	Remove versionInfo in Tsfile and get rid of versions in memtable	wshao08	Delete version info in TsFile

0.9.x (version-1) -> 0.10.x (version-2)

Last Updated on 2019-11-28 by Jialin Qiao.

PR#	Name	Author	Changes
553	[IOTDB-279] Merge TsDigest into Statistics	jack870131	Merge the function of TsDigest into Statistics class, which TsDisgest is the ByteBuffer format of Statistics
587	[IOTDB-325] Refactor Statistics	qiaojialin	Move start time, end time, count in PageHeader and ChunkMetadata into Statistics; Remove maxTombstoneTime in ChunkHeader
855	[IOTDB-587] New TsFile version 2	HTHou	Remove ChunkGroupMetadata, store ChunkMetadata list by series, Add TimeseriesMetadata for each series
1024	[IOTDB-585] Fix recover version bug	qiaojialin	Add MetaMarker.VERSION and version behind each flushing memtable (flushAllChunkGroups)
1047	[IOTDB-593] Add metaOffset in TsFileMetadata	qiaojialin	Add metaOffset in TsFileMetadata
1100	[IOTDB-605] Add more levels of index in TsFileMetadata	sunzesong	Update the structure of deviceMetadata to a tree-level indexed TsFileMetadata

0.8.0 -> 0.9.x (version-1)

Last Updated on 2019-10-27 by Lei Rui.

PR#	Name	Author	Changes
258	[IOTDB-143]Development of merge	jt2594838	Add totalChunkNum and invalidChunkNum to TsFileMetaData.
409	[IOTDB-165][TsFile] Delete a current version and add a number version and an exception.	Genius_pig	(1) Delete a current version in TsFileMetaData; (2) Change the TsFile magic number from 12 bytes to: 6 bytes magic string ("TsFile") + 6 bytes version number ({"000001", "000002", ""000003"}) ("v0.8.0" is the first version (we treat it as "000000")); (3) The tail of a TsFile only has "TsFile" magic string, without the version number.
466	[IOTDB-208] Bloom filter	SilverNarcissus	Add four fields for the bloom filter to TsFileMetaData: 1) bit vector byte array length, 2) bit vector byte array, 3) the number of bits, 4) the number of hash functions.