2.0.0-beta4

CHANGES:

Additions

• Handle @canonical tags in the top-comment of modules (@Julow, #662)
• Simplify paths referring to Stdlib (@jonludlam, #677)
• New odoc command to report warnings encountered during compilation/linking (@Julow, #667)
• Anchors on type extensions (@Julow, #684)

Bugs fixes

• Resolve references in module synopses (@Julow, #658)
• Fix reference resolution in the presence of shadowing (@Julow, #682)