Tilemap collision working but needs speeding up

node_modules/grunt-contrib-copy/docs/copy-examples.md

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+# Usage Examples
+
+```js
+copy: {
+  main: {
+    files: [
+      {src: ['path/*'], dest: 'dest/', filter: 'isFile'}, // includes files in path
+      {src: ['path/**'], dest: 'dest/'}, // includes files in path and its subdirs
+      {expand: true, cwd: 'path/', src: ['**'], dest: 'dest/'}, // makes all src relative to cwd
+      {expand: true, flatten: true, src: ['path/**'], dest: 'dest/', filter: 'isFile'} // flattens results to a single level
+    ]
+  }
+}
+```

node_modules/grunt-contrib-copy/docs/copy-options.md

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+# Options
+
+## processContent
+Type: `Function(content, srcpath)`
+
+This option is passed to `grunt.file.copy` as an advanced way to control the file contents that are copied.
+
+## processContentExclude
+Type: `String`
+
+This option is passed to `grunt.file.copy` as an advanced way to control which file contents are processed.

node_modules/grunt-contrib-copy/docs/copy-overview.md

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+Task targets, files and options may be specified according to the grunt [Configuring tasks](http://gruntjs.com/configuring-tasks) guide.

node_modules/grunt-contrib-copy/docs/overview.md

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+*This plugin was designed to work with Grunt 0.4.x. If you're still using grunt v0.3.x it's strongly recommended that [you upgrade](http://gruntjs.com/upgrading-from-0.3-to-0.4), but in case you can't please use [v0.3.2](https://github.com/gruntjs/grunt-contrib-copy/tree/grunt-0.3-stable).*