docs: fix typo in History
deprecate private utils.md5
deprecate more private utilities
deprecate private utils.conditionalGET
deprecate private utils.escape
deps: body-parser@1.3.0
docs: move badges
deps: response-time@2.0.0
deps: method-override@2.0.0
docs: fix sort in History
deps: multiparty@3.2.8
deps: should@~4.0.0
deps: method-override@2.0.1
deps: serve-static@1.2.1
2.19.0
Merge tag '2.19.0'
deps: supertest@~0.13.0