v0.6.0 - [CHANGE] Remove redundant `http_request_duration_total_seconds` metric from rack collector - [FEATURE] Add histogram support - [ENHANCEMENT] Rename Summary#add to Summary#observe. Summary#add usage is deprecated
v0.6.0 - [CHANGE] Remove redundant `http_request_duration_total_seconds` metric from rack collector - [FEATURE] Add histogram support - [ENHANCEMENT] Rename Summary#add to Summary#observe. Summary#add usage is deprecated