Change buffering strategy for file document source - buffer reader, not input stream
Merge pull request #211 from sesuncedu/change_buffering_of_file_doc_source

Change buffering strategy  buffer reader, not input stream
Different versions of jackson dependencies being maven-ed #209

Includes most of Require JDK 1.7 in pom.xml #210
Require JDK 1.7 in pom.xml #210
a few warnings removed
Fix #207 OBO parser fails when a comment is in the date tag

Also add workaround for OBO parser does not handle the [Instance] stanza
#208

Instance stanzas are not supported yet but errors will not be thrown.
Parsing will be stopped and a warning printed.