Merge pull request #730 from stefanbirkner/issue-729

Always close stream in readPreferences(). Fixes #729.
Change signature of MultipleFailureException.assertEmpty() to throw Exception.
Add back @Test tags accidentially removed in the previous commit
Fix typo in Javadoc
Merge pull request #735 from kcooney/multiple-failure-exception-throws

Change signature of MultipleFailureException.assertEmpty() to throw Exception
Indent with spaces (not tabs).
Merge pull request #743 from stefanbirkner/tabulation-char

Indent with spaces (not tabs).
Merge branch 'master' into pulls