Added unicode logging tests
fix(Request): UTF-8 logging
fix(HTTPError): Order of link document members is not stable
fix(API): Optimize should_ignore_body
fix(API) Modify should_ignore_body to use a set
fix(Travis): Update path to requirements file
Merge pull request #57 from kgriffs/Unicode-logging

Unicode logging - fixes #52
Merge pull request #59 from kgriffs/Issue_37

fix(API): Optimize should_ignore_body

Fixes #37
Merge pull request #58 from kgriffs/fix-http-error

fix(HTTPError): Order of link document members is not stable