Fix Literal...

• remove erroneous generic constraint

Minor Improvements to Literal

• change argument to be a string rather than an arbitrary view

Add Literal Code Element with Number and String Styles

• add Literal with .number and .string styles

Permit Top Tokens on Blocks

For example, to represent multiline closures:

some.closure(|x| {
    // ...
})

Minor Improvements

• update attribute color
• formatting

Initial Release

0.1.0

Update README.md