anthem/CHANGELOG.md

# Change Log

## (unreleased)

### Features

* optional detection of integer variables and integer predicate parameters
* command-line option `--detect-integers` to enable integer variable detection
* new simplification rule applying to integer variables
* support for declaring functions integer with the `#external` directive

## 0.1.8 (2018-04-20)

### Features

* more and advanced simplification rules
* adds support for exponentiation (power) and modulus (absolute value)
* new examples: prime numbers, permutation generator, and graph coloring (extended)

## 0.1.7 (2018-04-08)

### Features

* support for declaring placeholders with the `#external` directive

### Internal

* drops Boost dependency in favor of the header-only command-line option library [cxxopts](https://github.com/jarro2783/cxxopts)

## 0.1.6 (2017-06-12)

### Features

* unique IDs for all variables (user-defined variables are renamed)
* support for hiding predicates from completed output by using `#show` statements
* more simplification rules with `--simplify`
* command-line option `--parentheses` to fully parenthesize the output
* adds multiple example instances for experimenting

### Bug Fixes

* adds missing error message when attempting to read inaccessible file
* removes unnecessary parentheses after simplification
* fixes incorrect simplification with binary operations in arguments

## 0.1.5 (2017-05-04)

### Bug Fixes

* fixes lost signs with negated 0-ary predicates

## 0.1.4 (2017-04-12)

### Features

* completion of input programs (optional)
* command-line option `--complete` to turn on completion

## 0.1.3 (2017-03-30)

### Features

* support for anonymous variables

### Bug Fixes

* fixes incorrectly simplified rules with comparisons
* fixes misleading error message concerning negated, unsupported body literals

## 0.1.2 (2017-03-23)

### Features

* simplification of output formulas (optional)
* command-line option `--simplify` to turn on simplification

### Bug Fixes

* fixes incorrectly translated choice rules with multiple elements in the head aggregate

### Internal

* explicit syntax tree representation for first-order formulas

## 0.1.1 (2017-03-06)

### Features

* support for choice rules (without guards)

## 0.1.0 (2016-11-24)

### Features

* initial support for translating rules in *Essential Gringo* (excluding aggregates) to first-order logic formulas
* command-line option `--color` to autodetect, enable, or disable color output
* command-line option `--log-level` to control which status messages should be shown
Added change log. 2016-11-24 23:50:15 +01:00			`# Change Log`

Version bump after release 0.1.8 2018-04-20 16:37:03 +02:00			`## (unreleased)`

Add integer extensions to change log This adds the recent integer extensions to the change log, namely, integer variable detection, simplifications concerning integer variables, and support for explicitly declaring functions integer. 2018-04-20 16:38:57 +02:00			`### Features`

			`* optional detection of integer variables and integer predicate parameters`
			* command-line option `--detect-integers` to enable integer variable detection
			`* new simplification rule applying to integer variables`
			* support for declaring functions integer with the `#external` directive

Version bump for release 0.1.8 2018-04-20 16:35:35 +02:00			`## 0.1.8 (2018-04-20)`
Version bump after release 0.1.7 2018-04-08 21:03:20 +02:00
Update change log with recent additions This updates the change log with the advanced simplification rules, support for the exponentation operator, and the newly added examples. 2018-04-11 21:50:15 +02:00			`### Features`

			`* more and advanced simplification rules`
Support modulus operation (absolute value) This adds support for computing the absolute value of a term along with an according unit test. 2018-04-12 00:38:48 +02:00			`* adds support for exponentiation (power) and modulus (absolute value)`
Update change log with recent additions This updates the change log with the advanced simplification rules, support for the exponentation operator, and the newly added examples. 2018-04-11 21:50:15 +02:00			`* new examples: prime numbers, permutation generator, and graph coloring (extended)`

Version bump for release 0.1.7 2018-04-08 20:22:51 +02:00			`## 0.1.7 (2018-04-08)`
Version bump after release 0.1.6. 2017-06-13 00:14:16 +02:00
Support placeholders with #external declarations This adds support for declaring predicates as placeholders through the “#external” directive in the input language of clingo. Placeholders are not subject to completion. This prevents predicates that represent instance-specific facts from being assumed as universally false by default negation when translating an encoding. This stretches clingo’s usual syntax a bit to make the implementation lightweight. In order to declare a predicate with a specific arity as a placeholder, the following statement needs to be added to the program: #external <predicate name>(<arity>). Multiple unit tests cover cases where placeholders are used or not as well as a more complex graph coloring example. 2018-04-05 23:22:25 +02:00			`### Features`

			* support for declaring placeholders with the `#external` directive

Update change log with dependency change This adds the dependency change from Boost (for program options) to cxxopts to the change log. 2018-04-06 23:04:27 +02:00			`### Internal`

			`* drops Boost dependency in favor of the header-only command-line option library [cxxopts](https://github.com/jarro2783/cxxopts)`

Version bump for release 0.1.6. 2017-06-12 18:38:36 +02:00			`## 0.1.6 (2017-06-12)`
Version bump after release 0.1.5. 2017-05-04 16:46:24 +02:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Features`
Updated change log with unique variable ID feature. 2017-05-30 18:22:01 +02:00
			`* unique IDs for all variables (user-defined variables are renamed)`
Updated change log with new #show and simplification features. 2017-06-05 03:07:50 +02:00			* support for hiding predicates from completed output by using `#show` statements
			* more simplification rules with `--simplify`
Rephrased change log entry for clarity. 2017-06-09 22:13:05 +02:00			* command-line option `--parentheses` to fully parenthesize the output
Updated change log with new examples for experimenting. 2017-06-12 18:35:06 +02:00			`* adds multiple example instances for experimenting`
Updated change log with unique variable ID feature. 2017-05-30 18:22:01 +02:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Bug Fixes`
Added missing error message when input file does not exist. 2017-06-01 03:29:09 +02:00
			`* adds missing error message when attempting to read inaccessible file`
Removed unnecessary parentheses after simplification. 2017-06-05 03:58:39 +02:00			`* removes unnecessary parentheses after simplification`
Added bug fix to change log. 2017-06-09 22:02:02 +02:00			`* fixes incorrect simplification with binary operations in arguments`
Added missing error message when input file does not exist. 2017-06-01 03:29:09 +02:00
Version bump for release 0.1.5. 2017-05-04 16:00:49 +02:00			`## 0.1.5 (2017-05-04)`
Version bump after release 0.1.4. 2017-04-12 01:22:15 +02:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Bug Fixes`
Fixes lost signs with negated 0-ary predicates. 2017-05-04 15:44:37 +02:00
			`* fixes lost signs with negated 0-ary predicates`

Version bump for release 0.1.4. 2017-04-12 00:59:55 +02:00			`## 0.1.4 (2017-04-12)`
Version bump after release 0.1.3. 2017-03-30 16:34:43 +02:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Features`
Updated change log with new support for completion. 2017-04-10 16:49:59 +02:00
			`* completion of input programs (optional)`
			* command-line option `--complete` to turn on completion

Version bump for release 0.1.3. 2017-03-30 16:17:07 +02:00			`## 0.1.3 (2017-03-30)`
Version bump after release 0.1.2. 2017-03-23 15:38:33 +01:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Features`
Updated change log with support for anonymous variables. 2017-03-29 21:33:26 +02:00
			`* support for anonymous variables`

Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Bug Fixes`
Fixed incorrectly simplified rules with comparisons. 2017-03-28 17:13:15 +02:00
			`* fixes incorrectly simplified rules with comparisons`
Fixed misleading error message concerning negated, unsupported body literals. 2017-03-29 23:09:40 +02:00			`* fixes misleading error message concerning negated, unsupported body literals`
Fixed incorrectly simplified rules with comparisons. 2017-03-28 17:13:15 +02:00
Version bump for release 0.1.2. 2017-03-23 15:30:17 +01:00			`## 0.1.2 (2017-03-23)`
Version bump after release 0.1.1. 2017-03-06 18:09:48 +01:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Features`
Updated change log with basic simplification features. 2017-03-23 01:12:55 +01:00
Updated change log. 2017-03-23 15:12:56 +01:00			`* simplification of output formulas (optional)`
Updated change log with basic simplification features. 2017-03-23 01:12:55 +01:00			* command-line option `--simplify` to turn on simplification

Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Bug Fixes`
Updated change log with recent bug fix. 2017-03-23 02:14:10 +01:00
			`* fixes incorrectly translated choice rules with multiple elements in the head aggregate`

Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Internal`
Updated change log with new explicit formula representation. 2017-03-15 16:32:26 +01:00
			`* explicit syntax tree representation for first-order formulas`

Updated change log with support for choice rules. 2017-03-06 16:51:21 +01:00			`## 0.1.1 (2017-03-06)`

Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Features`
Updated change log with support for choice rules. 2017-03-06 16:51:21 +01:00
			`* support for choice rules (without guards)`
Version bump after release 0.1.0. 2016-11-25 00:02:52 +01:00
Version bump for release 0.1.0. 2016-11-24 23:52:15 +01:00			`## 0.1.0 (2016-11-24)`
Added change log. 2016-11-24 23:50:15 +01:00
Format change log sections with proper headings This makes the change log sections have proper headings, which were just normal text before. 2018-04-06 22:53:59 +02:00			`### Features`
Added change log. 2016-11-24 23:50:15 +01:00
			`* initial support for translating rules in Essential Gringo (excluding aggregates) to first-order logic formulas`
			* command-line option `--color` to autodetect, enable, or disable color output
			* command-line option `--log-level` to control which status messages should be shown