add end to end tests for delimited text file reader/writer
enhanced file reader writer tests
Merge pull request #47 from lefthandmagic/delimitedtext_test

Add end to end tests for delimited text file reader/writer
MessagePack parser with unit tests.

Want to do some more manual testing and add a couple more tests.
Merge pull request #45 from zackdever/msgpack-parser

MessagePack parser
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Merge pull request #50 from zackdever/contributor-update

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