Re-write of the API

• docs(readme): update usage docs 6289fe5
• refactor: simplify parser API and optimize output to be runtime context aware 019d3fc
• refactor: update buffer API methods to be more expressive 950016a
• refactor: do not pass ctx as first argument to function calls 6b3e8cc
• style: remove docblock 83ef52d
• chore: remove tslint in favor of eslint 7fd9a4b
• refactor: remove _ from private properties 1dc2906
• chore: update dependencies 95121bf

v2.1.2...v3.0.0