Ignore metadata in front of first symbol when looking for matching rules

[camsaul]

I could not get things like

(^:once fn* [x y]
  (+ x y))

to format correctly despite having custom rules for fn*; after digging into things a bit I realized this gets parsed to a metadata node wrapping fn* and token-value doesn't work correctly in this case. Changed token-value to unwrap metadata nodes in this case which means the correct rule is now found and things indent according to the appropriate rule

[weavejester]

Thanks for the commit! Can you change the commit message to:

Fix indentation for symbols preceded by metadata

This adds the keyword 'Fix' (useful for searching), and reduced the commit subject to 50 characters or less.

[camsaul]

@weavejester done

[weavejester]

Merged. Thanks for the work!