Streamline error output

Output line error

Handle all trailing punct in error

Free headroom of escaped strings

Smarter appendRef

use error type, not error value

Add license

Final mem frees + ensure references happen first

Better memory management

Break out note.zig and assemble all metadata before generating body

Formatting and code organization

Allow nested references, order references by first occurance

Update pantagruel

Use a set to catch forward references

Lowercase when escaping

Improve pant doc.

Update pant

Escape backlinks also

Use an array of structs instead of hashmap

Organize code a little