v0.3.0 - bare minimum on new libs

What's Changed

• [#43] remove cra, add webpack config by @denolia in #44
• Bump minimist from 1.2.5 to 1.2.7 by @dependabot in #39
• Bump glob-parent from 5.1.1 to 5.1.2 by @dependabot in #45
• Circleci project setup by @denolia in #49
• [#46] Update react, react-router by @denolia in #50

Full Changelog: v0.2.0...v0.3.0

v0.2.0 - bare minimum on old libs

• Create, edit books
• Simple user/password authentication