+--- 2.0.53 2012/12/03
+
+Improve hit estimate for or-searches (typically truncation)
+
+Fix snippets for non-ICU / seqno not updated.
+
+Replace key_compare_it with key_compare. This is because key_compare_it
+throws exception on some CPUs with alignment constraints.
+
+ICU: support @attr 5=2, @attr 5=3 in searches. (left truncation and
+left+right truncation).
+
+--- 2.0.52 2012/05/31
+
+Fix problem in dictionary due to increase max size of term.
+
+--- 2.0.51 2012/05/31
+
+Fix buffer overrun for terms using ICU normalization.
+
+Increase max size of indexing term from 256 to 512.
+
+--- 2.0.50 2011/11/01
+
+Fix a bug in zebra_begin_trans where Zebra could mark a transaction
+complete when it actually failed. This could happen if register files
+could not be opened.
+
+--- 2.0.49 2011/09/02
+
+Scan: allow preferred position > number + 1
+
+Fix bug #4592: dict_scan misses
+
+Fix snippets for complete fields, bug #4590. The
+snippet_add_complete_fields (chr-system) now takes the indexing term
+verbatim and makes that the display term.
+
+--- 2.0.48 2011/06/28
+
+Utility idebra-abs2dom part of distribution and deb+RPM packages.
+
+Fix problem with scan and complete subfields (:p) . In some cases,
+the display scan terms, would be invalid.
+
+--- 2.0.47 2011/05/24
+
+RPM: Store libraries in /usr/lib64 on 64-bit platforms.
+
+Zebra honors SRU sortkeys. If used with YAZ 4.2.0 or later,
+CQL sortby is honored as well.
+
+Fix scan's handling of normalized terms. Some terms were incorrectly
+ignored in the scan results, CJK terms in particular.
+
+--- 2.0.46 2011/03/23
+
+Fix bug in dictionary component of Zebra that could lead to
+inconsistent register assert for large deleteions.
+
+Improve estimate hits for phrase searches.
+
+--- 2.0.45 2010/12/22
+
+Add Debian package for Ubuntu maverick.
+
+Update to newer Libxml2/Libxslt for Windows package.
+
+Escape-sequences are disabled for RPN-queries with truncation=105/106.
+These, unlike regular expressions, do not support \-sequences .
+
+--- 2.0.44 2010/06/29
+
+grs1: avoid term_len < 0 for .abs operator 'range'
+
+ICU: fix use of un-init variable.
+
+More reasonable approx hits for truncated searches.
+
+Updates WRT Odr_int (YAZ 4).
+
+--- 2.0.43 2009/11/05
+
+Fix hits counts for searches when @attr 12=n is in use. This bug
+was introduced in 2.0.40.
+
+--- 2.0.42 2009/10/08
+
+Proximity modifications. The optimized proximity now deals with more
+cases, ie all prox of the form @prox 0 d 1 1,2,3 k 2 ..
+That's exlusive==0, any distance, ordered (true), relation (<, =, <=),
+known unit word.
+
+Fix bug WRT inconsistent registers, bug #3062.
+
+Fix install doc rule so it's compatible with Automake 1.11.
+
+--- 2.0.41 2009/08/24
+
+Fix typos and other errors in the documentation. Thanks to Galen
+Charlton.
+
+Fix DOM filter so that full record ID (z:id) if given is used verbatim
+rather than truncated until first blank - in other words use memcpy
+rather than sscanf. For PI fix record attributes parsing which was
+completely broken.
+
+--- 2.0.40 2009/07/13
+
+Fixed problem in result set handling and segment handling.
+
+--- 2.0.39 2009/07/09
+
+Improved speed of record fetching by using a different block sizes
+for recd{A,B}.
+
+Added zlib-compression of recd-storage (record data). This is enabled
+by using recordCompression: zlib in zebra.cfg.
+
+Dictionary delete more agressive (dict_del_string).
+
+--- 2.0.38 2009/06/19
+
+Improved estimated hits for AND operation (bug #2907)
+
+Fixed problem with register area growing after "drop DB". (bug #2913).
+
+--- 2.0.37 2009/05/18
+
+Example with marc21 is now installed and part of packages.
+
+Fixed XSL for OAI example.
+
+Fixed problem with generic proximity handling.
+
+Added new ranking handler: rank-2. This is a combination of rank-1 and
+static rank.. The staticrank is inverse (lowest value comes first, etc..).
+rank-2 thus substracts that from score. This allows a system to specify
+a "base" rank (=staticrank).
+
+--- 2.0.36 2009/02/17
+
+Added implementation-codes directive for .mar files.
+
+Avoid error for missing recordId when zebraidx' option -s is in use.
+
+Fixed problem with some disk blocks not beeing freed correctly when
+'drop database' is used.
+
+--- 2.0.34 2008/11/06
+
+Facets can now be performed on sort registers (:s), not just regular indexes
+(:w, :p) etc.. The performance appers to be much better than before.
+
+Added a facility to embed metadata for records generated by the DOM XML
+filter. The meta data step is triggered by a 'process-meta' section in the
+retrieve section of the dom config, e.g.
+ <retrieve name="myelementset">
+ <xslt stylesheet="my-usual.xsl"/>
+ <process-meta/>
+ </retrieve>
+The meta section substitutes metadata for all elements called 'meta' in
+namespace http://indexdata.com/zebra-2.0 . The meta element must have
+exactly one attribute, name, which specifies the special
+element set name which is equivalent to the suffix to zebra:: for
+non-embedded special retrievals. This allows snippets, facets etc to be
+included.
+
+Fixed bug #2202: incorrect sorting order when searching multiple databases.
+
+--- 2.0.32 2008/06/06
+
+Fixed OAI example.
+
+--- 2.0.30 2008/05/14
+
+Changed service name for Windows. Bug #978.
+
+Fixed the alwaysmatches including _ALLRECORDS for ICU term indexing. Bug #2139.
+
+--- 2.0.28 2008/04/03
+
+Handle right-truncation for ICU normalized terms.
+
+Updated OAI-PMH example.
+
+--- 2.0.26 2008/01/28
+
+Fixes for searches on Chinese text.
+
+Fixes for scan using ICU indexing terms.
+
+--- 2.0.24 2008/01/18
+
+Fixed some memory violations for ICU enabled indexing that could be
+triggered by long phrases.
+
+Enable ICU on Windows. Thanks to Tumer Garip for makefile patches.
+
+Fixed bug #2002: Zebra crashes during merge using ICU indexing.
+
+--- 2.0.22 2007/12/20
+
+Handle encoding errors for strings passed to ICU. (assert was
+thrown earlier).
+
+Added zebraidx command, adelete, which attempts to delete records.
+It's like 'delete', but does not fail if a record does not exist.
+
+--- 2.0.20 2007/12/19
+
+Added experimental support for faceted results. This is implemented
+as a special retrieval on a result set and is triggered using element
+set name zebra::facet::f1:t1,f2,t2,.. which will return terms and
+hit counts for field f1, type t1, field f2, type t2, .. The returned
+data is packed as XML or SUTRS depending on record syntax.
+
+Added support for Unicode-based indexing using ICU. This allows
+locale specific scanning, sorting. The implementation is based on
+the ICU utility part of YAZ 3.0.16 and later. See the manual as well
+as the examples/marcxml for an example of the use of ICU.
+
+--- 2.0.18 2007/09/19
+
+Fixed bug with scan and staticrank enabled. Bug introduced in 2.0.16.
+
+--- 2.0.16 2007/09/12
+
+Scan now returns a displayTerm which closer to the original word/phrase
+from original record.
+
+Added snippet support. Element set name zebra::snippet will make
+Zebra return an XML record with snippets (terms around matching terms).
+
+Fixed bug #1142: Non-indexed but listed attributes issues diagnostic.
+
+Fixed bug #1131: Missing value-of data in DOM filter.
+
+Fixed bug #1049: zebra.cfg lines with leading space are ignored.
+
+Fixed bug #1128: sortmax not honored.
+
+Fixed bug #1121: Crash for some searches with customized string.chr.
+
+--- 2.0.14 2007/05/09
+
+Zebra uses the YAZ 3 API. Note that this changes the Zebra API
+as well. The register layout is the same however.
+
+Fixed bug #1114: scan within set may use excessive CPU.
+
+Fixed memory leak that occurred in scan.
+
+Fixed memory leak that occurred for each deleted record.
+
+Optimize updates of records where content is almost identical to previous
+version of record. This makes updating of the internal explain database
+faster too.
+
+For RPN queries the index type (w,p,..) may be specified verbatim as
+structure attribute with string value, e.g. @attr 4=w .
+
+Changed record update API . It is now handled by function
+zebra_record_update which does insert/replace/delete/update of records .
+This function replaces zebra_record_{insert,delete} and
+zebra_admin_exchange_record. The DOM filter uses this feature and the
+@type attribute in record element specifies the action
+insert/replace/delete/update.
+
+Added support for multi-record updates (Bug #944). Based on patch from
+Hans-Werner Hilse.
+
+--- 2.0.12 2007/03/07
+
+Fixed bug with indexing of attributes for rec.grs-class of filters.
+If X-Path was enabled xelm a/@b would be ignored.
+
+Fixed bug in register system where 'no more space' messages was produced
+even though there was plenty of space.
+
+Fixed bug #884: Entity declarations in input are lost at retrieval time.
+
+Implemented new filter 'dom'. See test/xslt/dom-config*xml for examples.
+This, like alvis, performs indexing and retrieval using XSLT. But Unlike
+alvis, it allows multiple XSLT steps to be performed and does ISO2709
+reading. Bug #843.
+
+--- 2.0.10 2007/01/24
+
+Staticrank indexing is now an index register type defined in default.idx
+via directive 'staticrank'. The 'staticrank' directive for grs is no longer
+supported (was only implemented for Zebra 2.0.8).
+
+For searches, allow truncmax value to be controlled with attribute 13.
+If given, that overrides the value of 'truncmax'.
+
+For truncations being limited (abort at truncmax terms), zebrasrv returns
+SearchResponse with resultSetStatus=subset.
+
+For estimated hit counts, zebrasrv returns SearchResponse with
+resultSetStatus=estimate.
+