v4.1.0

• Update tests 9a040b4
• Better handling imports of builtins ea71048
• Fine tune rollup config bf0dfee
• Update readme d098d0e
• Update readme c6725f4
• Update dependencies c7134b2
• Update tests 66b495c
• Add 'add' option to prefixedBuiltins 3cb4ed8
• Improve code readability ea20446
• Update dependencies b2a0f05

v4.0.0...v4.1.0