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Changed license to GPL; some minor documentation changes.

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LICENSE
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THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM
CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
# GNU GENERAL PUBLIC LICENSE
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Version 2, June 1991
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Preamble
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END OF TERMS AND CONDITIONS

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README.md
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# mw-engine
A Clojure library designed to ... well, that part is up to you.
Core cellular automaton engine for MicroWorld.
## Usage
FIXME
Primary entry points are make-world and run-world, both in mw-engine.core. See
source or generated documentation for details. Documentation can be generated
using
lein marg
## License
Copyright © 2014 FIXME
Copyright © 2014 Simon Brooke
Distributed under the Eclipse Public License either version 1.0 or (at
your option) any later version.
Distributed under the terms of the [GNU General Public License v2][1]
[1]: http://www.gnu.org/licenses/gpl-2.0.html

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project.clj
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(defproject mw-engine "0.1.0-SNAPSHOT"
:description "Cellular automaton world builder."
:url "http://example.com/FIXME"
:license {:name "Eclipse Public License"
:url "http://www.eclipse.org/legal/epl-v10.html"}
:license {:name "GNU General Public License v2"
:url "http://www.gnu.org/licenses/gpl-2.0.html"}
:plugins [[lein-marginalia "0.7.1"]]
:dependencies [[org.clojure/clojure "1.5.1"]
[org.clojure/math.combinatorics "0.0.7"]