clingo version 5.3.0

Packages

• The easiest way to obtain Python enabled clingo packages is using Anaconda. Packages are available in the Potassco channel. First install either Anaconda or Miniconda and then run: conda install -c potassco clingo.
• Packages for clingo are available in the Linux distributions Debian, Ubuntu, and Arch Linux. (For historic reasons, the clingo package is split into gringo and clasp on Ubuntu/Debian.)
• For Mac OS X, clingo packages are available in homebrew and macports.

Changes

• change C API to use numeric instead of symbolic literals
  • affects assumptions and assigning/releasing externals (breaks backward compatibility)
  • added overloads to C++, python and lua API to support both numeric and symbolic version (preserves backward compatibility for most code)
• the python, C and C++ APIs now allow for customizing clingo by implementing a custom main function but reusing the rest of the application including the standard output
• add API function to detect conflicting programs
• add message logger to python and lua interface
• add support for primes in the beginning of identifiers and variable names
• add per solver registration of watches during propagator initialization
• add a directive to selectivel suppress undefined atom warnings
• add support for user defined statistics
• add _to_c functions for python API to be able to call C functions from python
• only create ground representations for requested program parts when grounding (#71)
• improve program observer (#19)
• support for binary, octal, and hexadecimal numbers (#65)
• the backend has to be opened/closed now
• release python's GIL while grounding (#82)
• TruthValue.{True,False} becomes TruthValue.{_True,_False} in python API
• improve API and it's documentation

clingo version 5.2.3

Packages

• The easiest way to obtain Python enabled clingo packages is using Anaconda. Packages are available in the Potassco channel. First install either Anaconda or Miniconda and then run: conda install -c potassco clingo.
• Packages for clingo are available in the Linux distributions Debian, Ubuntu, and Arch Linux. (For historic reasons, the clingo package is split into gringo and clasp on Ubuntu/Debian.)
• For Mac OS X, clingo packages are available in homebrew and macports.

Changes

• update to clasp version 3.3.4
• really fix --pre option
• fix link to potassco guide (#74)
• fix location printing (#78)
• fix linking problems (#79)
• fix modulo zero (#100)
• fix web builds (#103)
• fix addding clauses after a model has been found (#104)
• fix python program observer bindings (#105)
• expose exponentiation operator in APIs
• improve python docstrings (#101, #102)
• add option to build python and lua modules against an existing libclingo

clingo version 5.2.2

Packages

• Packages for clingo are available in the Linux distributions Debian, Ubuntu, and Arch Linux (AUR).
• For Mac OS X, clingo packages are available in homebrew and macports.
• The easiest way to obtain Python enabled clingo packages is using Anaconda. Packages are available in the Potassco channel. First install either Anaconda or Miniconda and then run: conda install -c potassco clingo.

Changes

• update to clasp version 3.3.3
• use GNUInstallDirs in cmake files to simplify packaging
• fix --pre option
• fix swapped clingo_assignment_size and clingo_assignment_max_size
• fix docstrings
• fix incremental mode
• fix sup and inf in python/lua bindings
• fix reified format term tuples
• fix wrong use of python API (causing trouble with python 3.6)
• fix compilation problems on 32bit linux (missing libatomic)

clingo version 5.2.1

• update to clasp version 3.3.2
• fix handling of istop in incmode programs
• fix handling of undefined ** operations
• fix preprocessing of disjunctions with undefined operations
  (regression in clingo-5)
• fix segfault during preprocessing
  (regression in clingo-5)

clingo version 5.2.0

• switch to MIT license
• improve compatibility with abstract gringo
• switch build system from scons to cmake
• improve windows compatibility
• make tests and examples python 3 compatible
• bison and re2c are no longer required to build source releases
• update to clasp 3.3.0
• the CLINGOPATH environment variable can be set
  to control from where to include files in logic programs
• propagators can add variables while solving now
• refactor interfaces (breaking backward compatibility)
  • there is just one solve function now
  • in the C API do not pass structs by value to callbacks
    because FFIs of some languages do not support this
• fix cleanup function
• numerous other bugfixes not listed here

clingo version 5.1.0

• update to clasp 3.2.1
• add interface to add variables during propagation
• add interface to inspect ground rules (C/C++ only)
• add experimental interface to access clasp facade (C/C++ only)
• fixed smodels output (--output=smodels)

clingo version 5.0.0

• gringo is no longer released separately, instead it is part of this and upcoming clingo releases
• cleanup of python and lua API (breaks backwards compatibility)
• added new aspif output format replacing the old smodels format
• added input language support for clasp features
  • #edge directives to add acyclicity constraints
  • #project directives for enumeration of projected models
  • #heuristic directives to steer clasp's search
• added theory atoms to write aggregate like constructs
• added stable C API documented with doxygen
• added experimental C++ API based on C API
• added theory propagator interface to clingo APIs
• added support for compilation with Visual Studio 2015
• improved data structures to reduce memory consumption on typical input
• updated to clasp version 3.2.0 + patches