Performance improvements and adding benchmarks

• chore: remove tslint in favor of eslint 39fb522
• feat: add descriptive response methods 31b2af9
• fix(response): use never return type for abort method (#13) 96049b2
• chore: add benchmarks against fastify bc320b8
• chore: define main field c42da1d
• ci: add appveyor and use node12 and latest for testing 4618191
• refactor: remove lodash in favor of smaller modules d055460
• refactor: remove _ prefix from all private properties 2833add
• chore: update dependencies 5f18a58

v1.5.4...v1.6.0