[1.17.3]

  * Added Walkable instances for `[Inline] Inline` and `[Block] Block`.

[1.17.2]

  * Provide default implementation for walk (Albert Krewinkel).
    The implementations for `walk` and `walkM` are very similar, so a
    default method is provided which implements the former in terms of the
    latter. This change should not affect performance, as the `Identity`
    functor, which is used in the default definition, is a newtype that
    should be eliminated at compile time.  (This requires a dependency
    on transformers for ghc 7.8.x.)
  * Force optimizations when compiling Walk module (Albert Krewinkel).
  * Add `Applicative m` to the context of walkM (Albert Krewinkel).
    The acceptance of AMP makes this a natural change.
  * Add `Walkable [Block]` and `Walkable [Inline]` instances (Albert
    Krewinkel).
  * Factored out duplicate code in Walk.
  * Added benchmark.
  * Text.Pandoc.JSON: Use `walk` instead of `bottomUp` in the
    `ToJSONFilter` instance for `a -> [a]`.  Note that behavior will be
    slightly different, since bottomUp's treatment of a function `[a] -> [a]`
    is to apply it to each sublist of a list, while walk applies it only to
    maximal sublists.  Usually the latter behavior is what is wanted, and the
    former can be simulated when needed.  But there may be existing filters
    that need to be rewritten in light of the new behavior.

[1.17.1]

  * Better consistency in simpleTable and table (jgm/pandoc#3648).
    If `headers` is empty, we populate it with empty cells, using the rows
    to determine number of columns.  We also ensure that there are numcols
    alignments and column widths.
  * Make sure Div and Span occur in Arbitrary instances.
  * Bump dependency upper bounds.
  * Removed unused mapConst.

[1.17.0.5]

  * Allow aeson 1.1.
  * Added tests for Walk (originally from pandoc).
  * Renamed README -> README.md, fix link (Kolen Cheung).

[1.17.0.4]

  * Re-add Functor constraint to walkM, needed for ghc 7.8.
  * Turn off redundant-constraints warning for Walk (for ghc 8.0.1+).
  * Added necessary Data.Traversable import.
  * Allow HUnit 1.5.

[1.17.0.3]

  * More ghc 7.8 compatibility imports.

[1.17.0.2]

  * Added a necessary import from Data.Monoid (for ghc 7.8).

[1.17.0.1]

  * Fix compiler warnings around Data.Monoid import on some platforms.

[1.17]

  * Remimplement json encoding of inlines manually (Jesse Rosenthal).
    This is the first step to doing manual encoding and decoding of pandoc
    JSON. This will replace the current generic deriving, which can be a
    moving target.
  * Move Arbitrary instances for types from pandoc (Jesse Rosenthal).
  * Remove empty arrays for leaf elements (Jesse Rosenthal).
    Elements with no children (Space, SoftBreak, LineBreak, HorizontalRule,
    Null) previously had an empty array for their "c" value. We remove that
    here.  This is a breaking change for the JSON format.
  * New toplevel JSON format with api-version (Jesse Rosenthal). The version
    number is the pandoc-types version.  The toplevel format was previously:

        [{"unMeta": META}, [BLOCKS]]

    It is now:

        {
         "pandoc-api-version" : [MAJ, MIN, REV],
         "meta" : META,
         "blocks": BLOCKS
        }

    Decoding fails if the major and minor version numbers don't match.
  * Add simple quickcheck tests to verify that roundtrip works properly
    (Jesse Rosenthal).
  * Add a LineBlock block element (Albert Krewinkel).
  * Add explicit unit tests for encoding and decoding (Jesse Rosenthal).
  * Fixed warnings in Walk, Builder.
  * Test with travis and appveyor.

[1.16.1.1]

  * Allow aeson 1.0.*.

[1.16.1]

  * Allow aeson 0.11.*.
  * Export pandocTypesVersion from Text.Pandoc.Definition.

[1.16.0.1]

  * Use deepseq instead of deepseq-generics.  deepseq now allows deriving
    generic NFData instances, so we don't need deepseq-generics.
  * Removed unneeded instance, use OVERLAPPING pragma for ghc 7.10.
  * Added CPP so that deepseq-generics is used for ghc < 7.10.
  * Added tested-with, generate .travis.yml using make_travis_yml.hs
  * Added stack.yaml

[1.16]

* Added Attr field to Image and Link.
* Added SoftBreak constructor to Inline
