anthem/CHANGELOG.md

# Change Log

## (unreleased)

## 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)`

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