Add Ability to Insert Existing Documents Into Files

[jrg94]

My initial thought was to have small chunks of markdown stored in files that could be injected into an existing doc. I still like this idea but it may involve parsing. A shortcut would be to let people input raw markdown and just not check it for them. Their risk.

[jrg94]

This would help with fleshing out the template idea since we could create docs that could be injected at any time.

[jrg94]

The Raw block should address this. The user would be responsible for reading their own files though.