Add ThrowableAssert#hasCauseInstanceOf assertion - Issue #19
Add ThrowableAssert#hasCauseExactlyInstanceOf assertion - Issue #19
Add ThrowableAssert#hasRootCauseInstanceOf assertion - Issue #19
Remove an occurrence to FEST in Javadoc.
Add ThrowableAssert#hasRootCauseExactlyInstanceOf assertion - Issue #19
Fixes #19 : Add cause assertions to ThrowableAssert (minor refactoring)
Merge branch 'throwable-cause'