anthem/CHANGELOG.md

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# Change Log
## 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