Feature: fit-to-width

[ntjess]

Use case: I want my slide header to always take up one line, regardless of how long that line is. This function solves the problem by allowing text to shrink to it's requested width

show heading.where(level: 2): it => {
  layout(layout-size => {
    fit-to-width(width: layout-size.width, it)
  })
}

#set page(height: auto)
#slide[
  == Lorem
]

#slide[
  == #lorem(10)
]

#slide[
  == #lorem(15)
]

Results in: