2.0.0

Added

• added eslint and prettier as dev.-dep.
• added tests for lib/functions.js
• added benchmark as dev.-dep.
• added simple benchmarks

Changed

• BREAKING: optional parameter with object and in camelCase, (arr, headers, start, increment_name, increment_step, custom_id_function) to
  arr, parameter: {headers, start, incrementName, incrementStep, customIdFunction} (#4)
• changed README.md to use optional parameter
• removed isObject as dependency (#6)
• removed duplicate functions and add them to the file lib/functions.js
• replaced lodash with single function-dep lodash.isequal