Some new features#29

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moteus wants to merge 13 commits intomkottman:masterfrom

Commits on May 3, 2013

Add. update/final methods accept string/lightuserdata and range index.
moteus
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Commits on May 6, 2013

Commits on May 7, 2013

Commits on May 11, 2013

Add. Test on travis-ci.org
moteus
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