True false operators for Maybe<T>#1

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tkellogg:true-false-operators

Commits on Dec 26, 2011

Added passing true operator
tkellogg
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Added bool implicit convertion operator
tkellogg
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removed bool implicit conversion & added | operator
tkellogg
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Added more tests for completion
tkellogg
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Added more tests covering || and | operators
tkellogg
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refined NotImplemented message
tkellogg
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