Obfuscation support for: if else elseif goto, minor improvements

Adds obfuscation support for if else elseif goto statements.
Minor improvements.

add obfuscation support for interfaces, traits, and namespaces.

1.2

add obfuscation support for interfaces, traits, and namespaces.

Add support for constant obfuscation

1.1

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minor bug fixes, --help option added

1.0.1

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First release

1.0

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