Merge pull request #64 from jfwood/master

Fixed the one-step POST call flow, verified with text/plain mime type; Modified exception handling to provide better feedback to client on errors;
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Release for v0.1.43
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Release for v0.1.44
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Release for v0.1.45
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Added support for retrieving secret info stored in datum records, more work to follow.
Merge remote-tracking branch 'upstream/master'