Update to blaze-markup-0.8.2.3

- 0.8.2.3 (2019-10-02)
    * Bump `base` to 4.13
    * Bump `tasty` to 1.2
    * Bump `QuickCheck` to 2.13

- 0.8.2.2 (2018-09-25)
    * Bump `base` to 4.12
    * Bump `containers` to 0.6
    * Bump `tasty` to 1.1

- 0.8.2.1 (2018-04-09)
    * Bump `QuickCheck` dependency to allow 2.11
    * Bump `tasty` dependency to allow 1.0
    * Bump `tasty-hunit` dependency to allow 0.10
    * Bump `tasty-quickcheck` dependency to allow 0.10

- 0.8.2.0 (2018-01-09)
    * Define `ToMarkup` instance for `Natural`.

- 0.8.1.0 (2017-09-16)
    * Compatibility with Semigroup/Monoid proposal
    * Switch to `tasty` for running tests

- 0.8.0.0 (2017-01-30)
    * Make `MarkupM` finally adhere to the Monad laws
    * Stricten the `IsString` instance to only work with `MarkupM ()` and not
      `MarkupM a`
    * Change the type of `contents` to `MarkupM a -> MarkupM a`
    * Add a `Semigroup` instance for `MarkupM`

- 0.7.1.1
    * Bump `HUnit` dependency to allow 1.5

- 0.7.1.0
    * Relax `QuickCheck` dependency to allow 2.9
    * Add text builder instances

- 0.7.0.3
    * Relax `HUnit` dependency to allow 1.3

- 0.7.0.2
    * Relax `blaze-builder` dependency to allow 0.3

- 0.7.0.1
    * Bump `QuickCheck` dependency to allow 2.8

- 0.7.0.0
    * Depend on blaze-builder 0.4

- 0.6.3.0
    * Add combinators to insert HTML comments

- 0.6.2.0
    * Add `Applicative` instance for `MarkupM`

(pho)