[TASK] Change state and version

Sets the state to "beta" on the development branch and changes the version number to the expected release version number in order to once again allow EM to properly install.

Also changed: author.
[BUGFIX] Add default header type setting

Adding this setting not only allows setting the default header type but also prevents any header tags from becoming "H0" (h-zero). Technically not a feature, although useful as one.
[TASK] Fill in Header element type