Version 4.5.2 (14 April 2009) includes the following changes:
 * Use re-entrant version of mbtowc in all code.
 * Fix run-time breakage on Mac OSX and FreeBSD.

Version 4.5.1 (13 April 2009) includes the following changes:
 * Fix Assertion failed: negative constituent length!
 * Fix build break for Mac OSX.
 * Force use of UTF-8 locale in the command-line tool.

Version 4.5.0 (10 April 2009) includes the following changes:
 * Hack around missing SQLite3 pkgconfig on MacOS
 * Fix adverbs: 'The motor ran hot', 'the door swung wide open', etc.
 * Fix: 'at risk of breakdown', 'under threat of fire'
 * Add regular-expression-based word guessing, from BioLG project.
   This provides support for many scientific/biomedical terms.
 * Add spell-guessing for unknown words. 
 * Fix UTF8 support to be correctly thread-safe.
 * BioLG: fix post-numbering: 'it started on day one'
 * BioLG: add number ranges: 'it takes 2 to 3 times the effort'
 * BioLG: assorted adverb fixes, typical of scientific prose.
 * BioLG: initiate, attach, localize etc are optionally transitive.
 * BioLG: allow fork, branch, splice, export, etc to take particles.
 * BioLG: extended use of greek letters in biomedical text.
 * BioLG: support parsing of Roman numerals.
 * BioLG: support greek-letter-number combinations.
 * Fix: 'she was singing', etc.
 * Enable WordNet word-sense identification based on syntactical usage.

Version 4.4.3 (11 March 2009) includes the following changes:
 * Look at JAVA_HOME to guess location of jni.h
 * Add dictionary maintenance utility script.
 * Add prototype German dictionary.
 * Fix sentences containing measurements, lengths, speeds. etc.
 * Add 1400 new adjectives, many of scientific origin.
 * Add 250 international currencies, including special utf8 symbols.
 * Performance optimization in sentence tokenization.
 * Add 1100 male, female given names (from Bruce Wilcox).
 * Cleanup parsing of "in-" date expressions, e.g. "in the 1940's".
 * Cleanup of assorted compiler warnings.
 * Fix handling of special utf8 characters in dictionary.
 * Fix hang when parsing certain utf8 input strings.
 * Make sure that most strings in the API are declared const char *
 * Add option to command-line client to print disjunct strings.

Version 4.4.2 (15 January 2009) includes the following changes:
 * Fix: 'The keys are gone', 'It is a gone desire'
 * Fix: 'He poured me a glass', 'He wired me the money', etc.
 * Initial rough-in of corpus statistics based parse ranking.
 * Initial rough-in of corpus-guided word-sense identification.
 * Fix for googlecode bugs 38, 39 (Java, Ruby failure to load)
 * Add new API routine to return disjunct string.

Version 4.4.1 (15 December 2008) includes the following changes:
 * Balance the dictionary tree; this speeds word-lookup slightly.
 * New MSVC6 build files from Evgenii Philippov.
 * Fix java server classes to pass along the link-grammar version number.

Version 4.4.0 (7 December 2008) includes the following changes:
 * fix: recognize curly-single-quote ’ where straight quote can be used.
 * recognize and explicitly ignore emoticon types.
 * Include MSVC6 build files.
 * Apply patch needed for Ruby bindings.
 * fix: "Where did they come from?", per Viswanath IIIT
 * fix: "Where did they go to?"
 * fix: "It gives me peace of mind."
 * fix: many, many incorrectly identified mass nouns.
 * fix: ladle.v "molten hot" "piping hot"
 * fix: "It's a shame that...", "The crux of the plan is that..."
 * Performance improvements (about 11%) to prunce.c from Bruce Wilcox
 * fix: "He eats with me nightly."
 * Add new public api function: linkgrammar_get_version()
 * MSVC9 build files from Borislav Iordanov
 * Java network-efficient client-server classes from Borislav Iordanov

Version 4.3.9 (8 October 2008) includes the following changes:
 * Issue 13: "John is altogether amazingly quick."
 * Nonstandard spelling "unequivocably"
 * Dictionary fixes for 'marginally', etc. "That one is marginally better"
 * Issue 7: Dictionary fixes for 'done': "I am done working"
 * dictionary entries for walk-up drivethru car-wash
 * dictionary: "I am through being mad", "It was a through flight", etc.
 * Issue 11: "You are doing well"
 * Issue 3: "I asked Jim a question", "I told Jim a story"
 * Passive subjects with objects: "I was told that crap, too" "...was asked..."
 * Fixes for Apple Mac OSX (crash on non-executable stack)
 * Early version of Filip Maric's boolean SAT solver
 * fix: "He talked quietly of revolt." 
 * fix: "It consists mostly of sand.", "He talks, mostly of revolution."
 * fix: "He talked mostly to Ann.", "He talks a lot."
 * fix: than_usual: "He is taking longer than usual."
 * fix: a batch of new verbs from Roman Khlupin
 * fix: Fix crash on Apple Macintosh by correctly identifying the platform.
 * fix: "San Gabriel" "Block Island" "Great Southern Bank" "de la Rente"
 * fix: "I biked Johnson Creek."

Version 4.3.8 (14 August 2008) includes the following changes:
 * Build fixes for Windows (missing bzero and thread-safe rand)
 * Fix several mem leaks, one in the Java jni code.
 * Fix crash of java6 jvm, due to blown stack limits.

Version 4.3.7 (8 August 2008) includes the following changes:
 * Expanded list of given names to include those from 2005 US Census
 * Export a new java jni function, to get the inflected word.
 * Add a TO+ connector so that "I tend to agree" parses correctly.
 * Makefile fixes for Mac OS/X Leopard.

Version 4.3.6 (21 July 2008) includes the following changes:
 * Fixes for Windows MS Visual-C builds.
 * Fix parsing of "He walked the dog.", "He sailed the boat."
 * Add support for right-apostrophe (’) which is a non-ASCII UTF8 char.
 * Add support for other non-ASCII UTF8 punctuation.
 * Fix crash on printing constituent tree of certain long sentences.
 * Avoid recursive error reporting for UTF8 dictionary errors.
 * Clarify error logging and error printing.
 * Add java getVersion() to return link-grammar version string.
 * Add more numbers to dict (e.g. twenty-seven, bazillion, half-dozen, etc.)
 * Foodstuffs: bagels, lox, tacos, guacamole, roe, neufchatel, mayo, etc.
 * Weights and measures: megabytes, °C, km² etc.
 * Performance improvements in printing of link-tree.
 * Convert assert into warning when no canonical linkages can be found.
 * Convert assert into warning when constituent andlist overflows.
 * Provide additional checks for constituent overflows.
 * Convert most error printfs into a formal error reporting system.
 * Remove all globals, library is now thread-safe.
 * Fix crash when sentence has square bracket, and doing constituents.

Version 4.3.5 (29 April 2008) includes the following changes:
 * Added ant build file to create the link-grammar jar file.
 * Fix regression in command-line client of multiple-parse display.
 * Use MB_LEN_MAX, not MB_CUR_MAX for UTF8 support.
 * Fix a WIN32 compiler regression (no inline support in Windows).
 * Fix error in handling of UTF8 dictionaries.
 * Fix strncat() misuse in error.c
 * Fix capitalization errors in country names.
 * Fix parsing of "he angled left, he dodged left, he turned left".
 * Don't build the JNI library if Java isn't found. Fixes build on Windows.
 * Fix install bug for NetBSD systems.
 * Pre-detected entities cannot participate in G links.
 * There is no UTF8 support in windows, so stub it out.
 * Fix crash in constituent output, bug #22 in googlecode bugtacker.
 * Some small steps taken to eventually make library thread-safe.
 * There are three constituent string styles, enable all three.
 * Make the command-line flag errors less cyrptic.
 * Add readline (BSD editline) support.
 * Rename "grammar-parse" to the more logical "link-parser".
 * Small man page updates.
 * Export and cost, link cost via public API.

Version 4.3.4 (16 March 2008) includes the following changes:
 * Fix regression of handling of capitalization at the start of sentences.
 * Fix dictionary search path so that it respects command-line input.
 * Fix rare but nasty crash when parsing long sentences in panic mode.
 * Add a method to set the dictionary path.
 * Fix all remaining compiler warnings.
 * Make parser capable of handling UTF8 strings and dictionaries.
 * Ongoing minor expansion of the Lithuanian (lt) dictionary.

Version 4.3.3 (27 February 2008) includes the following changes:
 * Missing java is a warning, not an error.
 * man page for grammar-parse.
 * Removed cruft from the dictionary open routines.
 * configure tries to guess some non-standard jni.h locations.
 * Split up java library exports, should help cygwin builds.
 * Fix java library pre-linking bug.
 * Minor English dictionary additions.
 * Prototype Lithuanian (lt) dictionary.

Version 4.3.2 (2 February 2008) includes the following changes:
 * Compile fixes for WIN32
 * Dictionary fixes for given names. (Fixes a serious problem with 4.3.1)

Version 4.3.1 (31 Jaunary 2008) includes the following changes:
 * A merger of significant parts of the "medical terms" dictionary
   from Peter Szolovits.  This includes thousands of additional words.

Version 4.3.0 (30 January 2008) includes the following changes:
 * New link types (Ct, Cta, Rn, Rw) for comparatives, so as to link
   relative clauses: "John is bigger than Dave is", "John wants more
   cookies than Dave wants". The Rw link is used to link question words
   to the relative clauses that follow them.
 * Dictionary Fixes for "Expresso is a coffee drink", "Teach me fetch",
   "I am pooped" as synonym for "I am tired", "Mother likes her", 
   "Mommy loves me" and related. Also, directives involving "go":
   "Go play ball", "Go take a walk", "You and Rover go play with the
   ball."
 * Dictionary support for external entity markup. This includes the
   recognizition of personID0..personID60, dateID0..dateID60,
   organizationID0..organizationID60 and locationID0..locationID60
   as appropriate words.
 * Fixes of numerous compile-time warnings.
 * Simple Java (JNI) bindings.

Version 4.2.5 (11 November 2007) includes the following changes:
 * Security fix for a buffer overflow. CVE-2007-5395