v1.2.0

Added

• <CheckboxGroup> and <Checkbox> interactive component (#108, #109)
• Redirect the content of <small> element into description in <Checkbox> and <RadioButton> (#109)
• Add the build for ES modules to make tree-shakable (#110)

Changed

• Upgrade dependent packages to the latest version (#107)
• Upgrade development Node to 12.15.0