v0.6.0

• updates documentation (839bbce)
• updates CONTRIBUTING.md with sample test and example code (774a5d5)
• hides circular dependency warnings in dev rollup bundler (efda22d)
• [breaking] updates test to zora v2 (32ddc4c)
• fix(package): update rollup-plugin-buble to version 0.19.2 (#66) (cf9d3c4)
• fix(package): update rollup to version 0.56.2 (#65) (1dd26c8)
• fix(package): update jsdoc-to-markdown to version 4.0.1 (#60) (8068f58)
• fix(package): update rollup to version 0.55.3 (#61) (93c173b)
• uses new execAsync in build script (a6aa1ac)
• switches test script to use new execAsync and displays linting warnings (2a02f43)
• implements a execAsync function (467ebb4)
• adds next release project badge to README docs (036a920)
• updates d3plus devDependencies (da6b90b)
• fix(package): update shelljs to version 0.8.0 (#54) (968b71f)
• fix(package): update rollup to version 0.54.0 (#56) (a3270ba)
• fix(package): update chokidar to version 2.0.0 (#53) (9f85861)