+--- 1.6.35 2013/09/23
+
+New target setting: pz:authentication_mode. PAZ-896
+
+pazpar2 PRM: pazpar2 runs as user nobody. PAZ-893
+
+Strip #-suffix for ZOOM URLs. PAZ-892
+
+--- 1.6.34 2013/08/30
+
+Fix issue with hanging show/bytarget. Could happen if new search was
+fired with filter before show from previous show completed.
+
+Add 'date' handling for solr-pz2.xsl.
+
+--- 1.6.33 2013/08/13
+
+pz:authentication may carry user group password. If pz:authentication
+has at least one blank in it, that forces Pazpar2 to use idPass Z39.50
+authentication. Two forms are allowed
+ user password
+ user group password
+If no blanks are present, open authentication is in use (as before).
+
+Fix {prev,next}recid elements that are returned by record
+command. These were incorrect in versions 1.6.23 thru 1.6.32.
+
+--- 1.6.32 2013/06/14
+
+Experimental support for snippets. If argument snippets=1 is given
+for command record or show, the text will include <match>-tags for
+those area that matches.
+
+Fix memory leak WRT client structures (incorrect inc ref count).
+
+Log when a HTTP response is serialized and the time elapsed.
+
+New command, service, which returns current service XML in use for
+session.
+
+--- 1.6.31 2013/05/24
+
+Local limit for fields of type "generic" (ie text fields) are
+now normalized by mergekey rule before comparison takes place.
+Before, no normalization took place and comparsion was, thus, exact.
+
+New facility: dynamic rank , which allows ranking to be changed
+for an existing result set. The rank can be set for search or
+show. This overrides the rank for metadata elements (which fields
+to rank and weight).
+
+New facility:dynamic mergekey , which allows mergekey to be changed
+for an existing result set. The mergekey can be set for search or
+show.
+
+HTTP server: host=@ listens on IPV6 and IPV4 if possible.
+Also, allow ports to be given as names (not just integers).
+Fix @-notation on systems that don't support IPV6 sockets.
+
+--- 1.6.30 2013/04/26
+
+Add MasterKey Connect configuration. Refer to section "non-standard
+databases" for more information.
+
+Allow timeformat for log to be specified with option -m (as Metaproxy
+and YAZ GFS).
+
+New Debian package pazpar2-dbg.
+
+Fix NULL ptr reference of se->relevance. If a new search is initiated
+and a CCL query fails to parse, Pazpar2 could crash.
+
+Fix problem with host/port mangling in Pazpar2 HTTP server. Problem
+existed in 1.6.29 only.
+
+--- 1.6.29 2013/04/05
+
+IPV6 updates. Allow IPv6 addresses for database hosts and IPv6 address
+for HTTP server. By default the HTTP server uses IPv4 only, but that can be
+changed by setting "host" attribute for the "listen" element.
+
+Change semantics of pz:extendrecs. Allow for repeated fetches .
+pz:extendrecs is now the number of extra records to fetch (was total
+count before).
+
+--- 1.6.28 2013/03/21
+
+Fix hang or memory violation if show occurred before a search. (not that
+it makes much sense to perform a show before a search).
+
+--- 1.6.27 2013/03/08
+
+pz2.js: Element_parseChildNodes concatenates all Text/CDATA nodes, instead
+of the first child.
+
+--- 1.6.26 2013/03/08
+
+New pz:metadata attribute, empty="empty-value" for Pazpar2's
+internal representation. With this attribute, Pazpar2 treates an empty
+pz:metadata type as having the value for "empty" - if empty.
+
+New setting, pz:extendrecs, which triggers extended fetch of records
+for a database beyond pz:maxrecs for a show command.
+
+Fix warning that was falsely issued for "missing limitmap".
+
+Log message for Pazpart start/stop changed. Now using same style as
+Metaproxy, ie Pazpar2 start SHA1 / Pazpar2 stop .
+
+--- 1.6.25 2013/02/07
+
+Fix hang of 2nd command=show with esn/syntax given.
+
+--- 1.6.24 2013/01/18
+
+New merge attribute type: 'first', which takes all metadata fields
+from first target that returns the particular field.
+
+--- 1.6.23 2013/01/02
+
+Extend info command with hostname and YAZ SHA1
+Indent results for both command stat and info.
+
+Allow limit on merged content. The new configuration metadata
+element, limitcluster, configures that a metadata element (name) be used
+as limit name for search. Applies to the whole service (ie all targets),
+unlike pz:limitmap which is configured per-target (database).
+
+New feature: limitmap local:* matches against all metadata fields.
+
+Allow repeated list in limitmap spec . Separated by comma. For
+example: value="local:title,rpn:@attr 1=4".
+
+New element <message> in bytarget response. Holds diagnostic message
+of code (say 'Unsupported Use Attribute' for Bib-1 114).
+
+Improved logging for record ingestion failures.
+
+Avoid using struct icu_chain in non-YAZ_HAVE_ICU mode. In the rare case,
+when YAZ is compiled without ICU support.
+
+--- 1.6.22 2012/10/11
+
+Requires YAZ-4.2.40 to support native solr support.
+
+Fix and improve logic handling whether or not to re-do search on sort
+order changes. A sort order with change in ascending/descending only
+whould not trigger a new search, which is required for targets with
+native sorting capabilities. Each client is now checked if instructions
+(sortmap) exist for native sorting and only client that does requires
+it is researched. Other clients is just re-ingesting the records,
+they already have. The resultset is now cleared if any researching
+is done.
+
+Connection sharing between session has broken since version 1.6.8 with
+introduction of logic that would minimize searching if pazpar2 could
+detect this based on same query and limits and partly sort order.
+This could lead to segementations violations.
+
+Added a chapter in the manaul about relevance ranking.
+
+--- 1.6.21 2012/09/24
+
+Rank tweak: follow=number will increase mult by number if two terms
+occur next to each other; number-1 if they are one term apart , .. 0
+if they are number a part (all in order). Default is 0 (following
+terms has no effect).
+
+Rank tweak: lead=k will divide mult by 1 + log2(1+k*l) where k is
+value given by lead and l is length from beginning of field where
+term occurs (l=0 for first term, l=1 for second term, ..). Default
+value of k is 0.0.
+
+Rank tweak: length=strategy. length="linear" if mult is to be divided
+by length (existing, default behavior), length="log" if mult is to be
+divided by log2(1+length), length="none" if mult is not to be affected
+by length.
+
+--- 1.6.20 2012/09/21
+
+Rank algorithm details may be printed as part of show response in
+element <relevance_info>.. This is only printed if <rank debug="yes"/>
+is used in service.
+
+Record as returned by show/record command have a minimal indentation
+which makes things human-readable.
+
+New configuration of default sorting criteria (sort-default) in
+service definition. If no criteria is defined it will be as before
+'relevance'.
+
+Search command now supports sort parameter just as the show command.
+If no parameter is give, it will use the service sort-default value.
+
+--- 1.6.19 2012/09/18
+
+Rank algorithm skips strings that gets normalized to empty string.
+For example, & and ! could map to the empty string. The weight for
+those terms is now 0 (as if they were not part of the query).
+
+Rank algorithm does not use CCL from limitmap; only from the query
+parameter (user query).
+
+Obey -w dir.
+
+--- 1.6.18 2012/09/17
+
+Rank algorithm configurable by 'rank' element inside service. So far
+only, attribute 'cluster' is recognized. If cluster="yes", multiple
+records inside a cluster boosts higher than single records. This
+is default behavior and existing behavior. cluster="no" takes the
+average score of each record in a cluster.
+
+--- 1.6.17 2012/09/05
+
+Fix bad re-use of connections (connections with changing proxy should not
+be reused).
+
+--- 1.6.16 2012/08/22
+
+Fix a bug introduce in 1.6.15 around the position sorting. It resetted the
+resultset and sorting when the sort order is position. However this will be done on
+every client poll, which will make pazpar2 continuing reset and fetching.
+It should only be done on FIRST request where the sort order change.
+
+Fix an issue on suggestion option: Also disable suggestions on empty string.
+
+Clean up in turbo marc stylesheet.
+
+Remove the hardcoded size of termlists.
+
+--- 1.6.15 2012/06/27
+
+New facility: ccldirective may be given in service definition. Allows
+CCL parsing to be customized a bit, such as defining names of operators
+and, or, not.
+
+New facility: raw record by checksum, rather than offset. The record
+command optionally takes checksum which identifies certain record from
+a database.
+
+New facility: per field ranking. Rank may be given as M [F N] where
+M is default rank and N is rank for CCL terms from field F.
+
+--- 1.6.14 2012/06/04
+
+Fix for IE7/8 in pz.js
+
+Applied patch from Giannis Kosmas on keepAlive, which also adds keepAlive to init response.
+
+Lower log level some places.
+
+Remove some invalid test results.
+
+--- 1.6.13 2012/05/23
+
+Introducing a version=2 parameter for show, termlist and bytarget commands.
+This enables pazpar2 to return approximation on hit and count count when
+doing record filtering using the limit parameter on search and a
+limitmap with a value of "local:"
+
+Setting pz:xslt may embed local XSLT as an alternative to referring
+to filenames.
+Value is not CDATA but XML nodes embedded, so escaping is not necessary
+but a root element *must* be present. For example:
+<settings target="target="z3950.indexdata.com/marc">
+ <set name="pz:xslt">
+ <xsl:stylesheet
+ version="1.0"
+ ..
+ </xsl:stylesheet>
+ </set>
+ </settings>
+
+Metadata field rank may given by XML internal document (pz:xslt
+result). If rank is not given, the rank from service description is
+used - as before.
+
+Metadata field can now configured a default limitmap and facetmap.
+Setting limitmap to "local:" would work for all kind of targets, but would
+prob. not be the optimal solution. But at least better than the default behavior
+of pazpar2 where no filtering is done.
+
+A service definition can now also contains <set/> that defines service-wide
+settings. These will override server-wide sets and will be overridded by
+settings.
+
+New setting, pz:present_chunk, that specifies number of records to fetch
+at a time. Zero will disable chunkation; will fetch max_records at once.
+
+--- 1.6.12 2012/03/14
+
+Revert the format change in termlist response, that could break
+some clients / UIs since they were expecting an (empty) element
+if no facet values was found.
+
+--- 1.6.11 2012/03/07
+
+Revert the behavior of returning errors when unable to block
+on termlist, bytarget and search, when unable to block due to
+other block. The client will now receive a regular response,
+but it will be logged in the server. A parameter (report) is
+added to change behavior to return error response or WARNING
+status message. Consider this "API" as private, as it is mostly
+untested and could be changed in future releases.
+
+Fix spell error in pz2.js fix in 1.6.10.
+
+New Marc2TurboMarc.xsl (contribution from Sven Porst).
+Can solve the missing marc21.xsl updates in some cases.
+
+tmarc.xsl: Simplify the 6xx to subject-long and fix 1-based
+substring (contribtion from Sven Porst)
+
+marc21.xsl: fix 1-based substring call
+
+tmarc.xsl and marc21.xsl: use 856$a as last option for electronic-text.
+
+Add test_termlist_block to test suite
+
+--- 1.6.10 2012/02/23
+
+Fix SEGV for invalid PQFs and SRU/SOLR targets
+Also refactor a bit the code that converts from PQF to SRU/SOLR queries.
+
+Fix pz2.js: "null object" due to change in in bytarget result XML.
+
+Fixes in tmarc.xsl: Subject-long shorten for extra commas only.
+Added this normalization to the other subject-long fields (d6xx),
+where it was missing.
+
+Fixes in marc21.xsl: Updated with most of the new tmarc.xsl.
+Still differences around medium and holdings. marc21.xsl is not
+longer active used by Index Data, and should be considered unsupported.
+Use tmarc.xsl instead.
+
+--- 1.6.9 2012/01/19
+
+Fix SEGV that could occur for failed connections.
+