fix(prettyprint): make directive terminal to not evaluate directives and expressions on content
chore(project): bump version to 0.4.1
docs(changelog): update changelog
Merge branch 'hotfix/0.4.1'
fix(open-once): read w11k-open-once attribute instead of open-once
fix(slides): apply some styling fixes from ionic tutorial
chore(project): bump version to 0.4.2
docs(changelog): update changelog
Merge branch 'hotfix/0.4.2'