Update README.md

Fix version number

Add function for getting lock level and clearing unlocked stack

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Add stack locking

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Update readme

Add stack saving and restoring

Freeze the stack inside the clear method

Add varargs to stack manipulation methods

Add freezing

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Update README.md

Update README.md

Update README.md

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Add example and update docs

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Fix comment typo

Add documentation

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Create LICENSE.txt

Create README.md

Initial Commit