SES-1900 : Add regression test for literals and newline chars
SES-1900 : Add custom test for multiline literals and Turtle

The round-trip regression test did not break, so this needs a custom
test as it is a visual issue.
Add JUnit ignore for N3ParserTest that is already ignored in Maven
SES-1900 : Cleanup test to use Model and Rio.write

Not hardcoding the implementation, and using RDFFormat.TURTLE makes the
test more portable
SES-1900 : Fix Turtle Multi-line literal rendering
Merged in SES-1900 (pull request #178)

SES-1900 : Fix Turtle Multi-line literal rendering