Only allow h3-h6 when saving posts. Tweak editor to only have h3-h6
Tweaking comment and removing unused param
Don't simply override if block_formats is already set.
Merge pull request #5 from borkweb/only-h3-h6

Only allow h3-h6 when saving posts. Tweak editor to only have h3-h6
Adding a metabox with a checkbox
I added the metabox is there and the checkbox is working
Fixed codesniffer mistakes and switched around a line
Nevermind I had to change it back
Now everything seems to be working, I have tested it
Fixed codesniffer problems
Updated from the comments