Bump version to 14.56.0:

Adds support for:
 - bestrecipes.com.au
 - breadtopia.com
 - dish.co.nz
 - inbloombakery.com
 - joythebaker.com
 - kitchenaid.com.au
 - kuchynalidla.sk
 - leukerecepten.nl
 - moulinex.fr
 - myjewishlearning.com
 - whole30.com
 - womensweekly.com.au

Features:
 - Adds the 'cooking_method' scraper field
 - halfbakedharvest: support additional scraper fields
 - sallysbakingaddiction: support additional scraper fields
 - Add sphinx-lint checking for the README.rst file
 - Allow legacy scraper tests to check for expected HTTP headers

Fixes:
 - monsieurcuisine: use API to restore functionality
 - foodnetwork: restore .com domain to supported hosts

Misc:
 - Temporarily (*) pins the lxml dev dependency upper-bound
 - Updates baseline dependency versions (both package and development)
 - Refactor of some library-internal utility code

(*) See: scrapinghub/extruct#215

recipe_scrapers/__version__.py

@@ -1 +1 @@
-__version__ = "14.55.0"
+__version__ = "14.56.0"