ghc-http-types-0.12.2-bp151.2.2

- Update http-types to version 0.12.2.
  * 0.12.2 [2018-09-26]
  Add new parseQueryReplacePlus function, which allows specifying whether to replace '+' with ' '.
  Add header name constants for "Prefer" and "Preference-Applied" (RFC 7240).

- Cosmetic: replace tabs with blanks, strip trailing white space,
  and update copyright headers with spec-cleaner.

- Update http-types to version 0.12.1.
  * Add new functions for constructing a query URI where not all parts are escaped.
  * URI encoding is now back to upper-case hexadecimal, as that is the preferred canonicalization, and the previous change caused issues with URI
  * signing in at least amazonka.
  * Remove dependency on blaze-builder. (Note that as a side effect of this, URI encoding is now using lower-case rather than uppercase hexadecimal.)
  * Add Bounded instance to Status.
  * Re-export more status codes and http20 from Network.HTTP.Types.
  * New status codes, new headers.
  * Fixed typo in imATeapot, added missing toEnum.
  * Oh, and http20.