added keywords dictionary (dict=keywords) support to RT indexes

added MVA, index_exact_words support to RT indexes (#888)

added MVA64 (a set of BIGINTs) support to both disk and RT indexes (rt_attr_multi_64 directive)

added an expression-based ranker, and a number of new ranking factors

added ATTACH INDEX statement that converts a disk index to RT index

added WHERE clause support to UPDATE statement

added bigint, float, and MVA attribute support to UPDATE statement

added support for upto 256 searchable fields (was upto 32 before)

added FIBONACCI() function to expressions

added load_files_scattered option to snippets

added implicit attribute type promotions in multi-index result sets (#939)

added index names to indexer progress message on merge (#928)

added --replay-flags switch to searchd

added string attribute support and a few previously missing snippets options to SphinxSE

added previously missing Status(), SetConnectTimeout() API calls to Python API

added ORDER BY RAND() support to SELECT statement

added Sphinx version to Windows crash log

added RT index support to indextool --check (checks disk chunks only) (#877)

added prefork_rotation_throttle directive (preforked children restart delay, in milliseconds) (#873)

added on_file_field_error directive (different sql_file_field handling modes)

added manpages for all the programs

added syslog logging support

added sentence, paragraph, and zone support in html_strip_mode=retain mode to snippets

optimized search performance with many ZONE operators

improved suggestion tool (added Levenshtein limit, removed extra DB fetch)

improved sentence extraction (handles salutations, starting initials better now)

changed max_filter_values sanity check to 10M values

added FLUSH RTINDEX statement

added dist_threads directive (parallel processing), load_files, load_files_scattered, batch syntax (multiple documents) support to CALL SNIPPETS statement

added OPTION comment='...' support to SELECT statement (#944)

added SHOW VARIABLES statement

added dummy handlers for SET TRANSACTION, SET NAMES, SELECT @@sysvar statements, and for sql_auto_is_null, sql_mode, and @@-style variables (like @@tx_isolation) in SET statement (better MySQL frameworks/connectors support)

added complete SphinxQL error logging (all errors are logged now, not just SELECTs)

improved SELECT statement syntax, made expressions aliases optional

fixed #982, empty binlogs prevented upgraded daemon from starting up

fixed #978, libsphinxclient build failed on sparc/sparc64 solaris

fixed #977, eliminated (most) compiler warnings

fixed #969, broken expression MVA/string argument type check prevented IF(IN(mva..)) and other valid expressions from working

fixed #966, NOT IN @global_var syntax was not supported

fixed #958, mem_limit over INT_MAX was not clamped

fixed #954, UTF-8 snippets could crash on malformed data

fixed #951, UTF-8 snippets could hang on malformed data

fixed #947, bad float column type was reported via SphinxQL, breaking some clients

fixed #940, group-by with a small enough max_matches limit could occasionaly crash and/or sort wrongly

fixed #932, sending huge queries to agents occasionally failed (mainly on Windows)

fixed #926, snippets did not highlight widlcard matches with morphology enabled

fixed #918, crash logger did not report a proper query in dist_threads case

fixed #916, watchdog caused (endless) respawns if there was a crash during shutdown

fixed #904, attribute names were not forcibly case-folded in some API calls (eg. SetGroupDistinct)

fixed #902, query parser did not support stopword_step=0

fixed #897, network sockets dangled (open but unattended) while replaying binlog

fixed #855, allow_empty option in snippets did not always work correctly

fixed #854, indexing with many bigint attributes and docinfo=inline crashed

fixed #838, RT MVA insertion did not sort MVA values, caused matching issues

fixed #833, duplicate MVA values were not eliminated on update

fixed #832, certain (overshort/incorrect) documents crashed indexing MS SQL Unicode columns

fixed #829, query parser did not properly handle numerics with blend_chars

fixed #814, group-by string attributes in RT indexes dit not always work correctly

fixed #812, utf8 stemming produced unexpected stems on words with single-byte chars

fixed #808, huge queries crashed logging with query_log_format=sphinxql

fixed #806, stray single-star keyword crashed on querying

fixed #798, snippets ignored index_exact_words in query_mode

fixed #797, RT klist loader had an occasional off-by-one crash

fixed #791, preopen_indexes erroneously defaulted to 0 on Windows

fixed #790, huge dictionaries (over 4 GB) did not work

fixed #786, inplace_enable could occasionally corrupt the indexes

fixed #775, doc had a typo (soundex vs metaphone)

fixed #772, snippets duplicated blended chars on a SPZ boundary

fixed #762, query parser truncated digit-only keywords over 15 digits

fixed #736, query parser dit not properly handle blended/special char sequence

fixed #726, rotation of an index with a changed attribute count crashed

fixed #687, querying multiple indexes with index weights and sort-by expression produced incorrect (unadjusted) weights

fixed #585, (unsupported) string ordinals were silently zeroed out with docinfo=inline (instead of failing)

fixed #583, certain keywords could occasionally crash multiforms

fixed that concurrent MVA updates could crash

fixed that query parser did not ignore a pure blended token with a leading modifier

fixed that query parser did not properly handle a modifier followed by a dash

fixed that substring indexing with dict=crc did not support index_exact_words and zones

fixed that in a rare edge case common subtree cache could crash

fixed that empty result set returned the full schema (rather than SELECT-ed columns)

fixed that SphinxQL did not have a sanity check for (currently unsupported) result set schemas over 250 attributes

fixed that updates on regular indexes were not binlogged

fixed that multi-query optimization check for expressions did not handle multi-index case

fixed that SphinxSE did not build vs MySQL 5.5 release

fixed that proximity_bm25 ranker could yield incorrect weight on duplicated keywords

fixed that prefix expansion with dict=keyword occasionally crashed

fixed that strip_path did not work on RT disk chunks

fixed that exclude filters were not properly logged in query_log_format=sphinxql mode

fixed that plain string attribute check in indextool --check was broken

fixed that Java API did not let specify a connection timeout

fixed that ordinal and wordcount attributes could not be fetched via SphinxQL

fixed that in a rare edge case OR/ORDER would not match properly

fixed that sending (huge) query response did not handle EINTR properly

fixed that SPH04 ranker could yield incorrectly high weight in some cases

fixed that C API did not let zero out cutoff, max_matches settings

fixed that on a persistent connection there were occasionally issues handling signals while doing network reads/waitss

fixed that in a rare edge case (field start modifier in a certain complex query) querying crashed

fixed that snippets did not support dist_threads with load_files=0

fixed that in some extremely rare edge cases tiny parts of an index could end up corrupted with dict=keywords

fixed that field/zone conditions were not propagated to expanded keywords with dict=keywords