Enable video posts {block:Caption} parsing
Add {AudioEmbed-Size} tags to the Templatize mappings
Add external audio detection for audio posts to the Templatize class
Add default AudioEmbed tag to audio posts
Add audio post filtering to the PostFilter
Reformat PostParser::
Enable audio block variable parsing
Add {AskerPortraitURL-Size} to templatize mappings
Fix asker link in TemplatizeMappings
Update photo post filter to include Exif data and block tag
Remove single post test from PostParserTest
Switch blockVariable and specific postType rendering
Enable specific photoset post rendering
Fix answer post {Asker} tag templatizing