Fix a minor typo in the text styles example
Merge pull request #250 from zacharyrankin/master

Fix a minor typo in the text styles example
Merge pull request #256 from PHPOffice/develop

PR 0.11.0
Version and changelog for 0.12.0
Bugfix for #257: HTML Reader: `<p>` and header tags puts no output
Merge branch 'master' into develop