Now all modules are in core modules folder

modules/advagg/advagg_css_compress/css-compressor-3.x/docs/Contribute.md

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+Contribute
+==========
+
+This project is always in dire need of help in any form, I only have 2 rules:
+
+- All sandboxed tests must pass.
+
+For nix users: From the root directory, run 'make test'
+For windows users: Run 'php unit/start.inc'
+
+- Tab character indentations
+
+I don't care if you like 2,3,4,8,16 spaced indentation, just make sure it's a tab character and not spaces.
+
+
+make test
+---------
+
+This command will run all sandboxed tests to check that most functions run the way they should.
+
+
+make test-focus
+---------------
+
+This command runs a focused test on a single function for development. Open up unit/focus.inc for configuration.
+
+
+make test-file
+--------------
+
+This command runs a focused test on a single file. Make sure the original resides in unit/sheets/original/ and the expected
+output resides in unit/sheets/expected/. Open up unit/file.inc for configuration
+
+
+make test-all
+-------------
+
+This command runs all sandboxed tests, as well as double compressions on any stylesheets in benchmark src. Doesn't always pass,
+but is a helpful check to see that most compression is done the first time around.
+
+
+make test-regression [ VERSION=temp ]
+--------------------------------
+
+The regression command takes an optional assignment which will do testing against the given version. Defaults is to the last run test.
+
+
+make benchmark
+--------------
+
+This command runs the benchmark process. This will create a new temp directory for regression testing and comparison.
+
+
+make clean
+----------
+
+This command removes all generated files used for comparisons and benchmarks.
+
+
+unit/sandbox/
+-------------
+
+The sandbox directory contains json files for focused tests used in unit testing.