v0.6.3

• Add a "load more" button for display of additional search results
  (@felixSchl, #305)
• Fix source links in re-exported declarations (@felixSchl, #345)
• Display the types of data constructors and type class members in search
  results (@hdgarrood, #264)
• Include entries from Prim in search results (@hdgarrood, #265)
• Allow data constructors and type class members to be found when searching by
  type (@hdgarrood, #303)
• Fix searching for type operators by name (@hdgarrood, #330)
• Slightly promote search results which come from packages with more reverse
  dependencies (@hdgarrood, #353)
• Fix an issue where any query which included a hyphen would be treated as a
  type, preventing searching by name; this was a problem for queries such as
  e.g. "generics-rep" (@hdgarrood, #321)
• Take into account whether type variables match when performing type search.
  For example, after this change, map ranks higher than cmap for the query
  "(a -> b) -> f a -> f b"; previously they were equally ranked (@hdgarrood,
  #355)
• Add help explaining the search feature (@hdgarrood / @grossbart, #339, #357)