0.15.0

• Upgrade dependencies: 208a4a0
• Add fontSize to Avatar and update size to accept numbers: 46f82f0
• Fix getStyles adding unnecessary borders: b6441e1
• Rename Variant type to ColorVariant: 03c79f9
• Add Variant type: 1371943
• Fix Menu accent prop not being forwarded to MenuItem: 625b775
• Upgrade Alert: 85ff9b7
• Upgrade ButtonGroup: ab83d50
• Fix Image dimensions: 301c7b8
• Add drag icons: 4fd281c
• Add showSinglePage prop to Pagination: 9d252ea
• Update description of the callback types: 3f7cf70
• Upgrade Portal, Modal and Dialog: 27e25ff
• Fix Chip with empty spans: c7371a9
• Add zIndex scale to theme: b2acc3e
• Enable useFontSize in Box, Flex and Grid: 73b3426
• Fix display modes: e869598
• Fix exports and props: 789f3bf
• Re-export SVG and colorizr: 3a9563a
• Add positioning to buttons: 4dd95a9
• Update storybook preview: f99443a
• Add MenuToggle: b682b6a
• Add Sidebar: fb4dc58
• Upgrade NavBar: 60161e9
• Update theme and helpers: 852fe5c
• Upgrade Tabs: 04be88f