Use DictionaryList instead of AA for HTTPServerRequest.context. Closes #1550.
Use DictionaryList instead of AA for HTTPServerRequest.context. Closes #1550.

rejectedsoftware/vibe.d,etcimon/vibe.d,chalucha/vibe.d,etcimon/vibe.d,DBankov/vibe.d,gedaiu/vibe.d,Geod24/vibe.d