Update intl library from v0.4? (2014) to v0.7.4 (2016). Use global composer autoloader now.
Update from v0.3.0 (2012) to v1.0.0 (2017) which should remove some warnings and improve PHP7 support. Using composer to handle this PEAR library now. Fix a problem in FeedutilsTest.
Unfortunately not so much unit testable, but added in preparation to update LanguageDetect and Intl library.