Changed lex() from recursive to iterative, preventing Maximum Call Stack errors.#17

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toms-dev wants to merge 2 commits intozaach:masterfrom toms-dev:master

+5-6

Commits on Mar 11, 2016

Changed lexing from recursive to iterative, preventing Maximum Call Stack exceptions with long inputs that has many skipped tokens.
toms-dev
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Commits on Mar 17, 2016

Fixed identation
toms-dev
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