tweak regular expression to better handle a variety of edge cases. add whitelist of valid file extensions. add handling of no file extension scenario by using the content-type value. adds a variety of new debug mode error logging
tweak regular expression to better handle a variety of edge cases. add whitelist of valid file extensions. add handling of no file extension scenario by using the content-type value. adds a variety of new debug mode error logging

brendandc/multilingual-google-image-scraper