Release Notes: HolSmtLib now also supports Z3 proof reconstruction for goals that involve fixed-width words and a translation from HOL into SMT-LIB 2 format. HolQbfLib supports checking for both validity and invalidity of certificates for Squolem 2.02. wordsSyntax.mk_word_replicate computes the width of the resulting word when applied to a numeral and a fixed-width word. The system supports syntax for decimal fractions. This syntax maps to division terms of the form n / 10m. In the core system, this syntax is enabled for the real, rational, and complex theories.
Release Notes: There is now a Poly/ML implementation of HOL4 available for users on platforms other than Windows. Overloading can now target "syntactic patterns". The :string type is now an alias for :char list. Types can now be numerals. The finite cartesian product "array" type can now be written with square brackets. wordsLib now supports evaluation over non-standard word-sizes. Support for Unicode was added. Support for Patricia trees was added. Many other enhancements and bugfixes were made.