1.7.0

Breaking changes

• Fix layoutPretty and layoutSmart so they don't produce trailing whitespace as a result of indenting empty lines.
  • Users of removeTrailingWhitespace should check whether it is still needed.
• Use floor instead of round to compute ribbon width.
• Remove deprecated Data.Text.Prettyprint.Doc.Render.ShowS module.
• Add optimized implementation of stimes for Doc.
• Generalize the type of layoutCompact to clarify that it doesn't preserve annotations.
• Add strictness annotations in SimpleDocStream and PageWidth.

Non-breaking changes

• Add shallower Prettyprinter module hierarchy exposing the same API.
  • The current plan for the existing Data.Text.Prettyprint.Doc* modules is:
    • Start deprecation in early 2021.
    • Remove the modules after a deprecation period of at least one year.
• Fix build with GHC 7.4.
• Various documentation improvements.