• [Input] — fix placeholder in IE for flat design
• [Input] — fixed not showing placeholder if mask enabled in IE
• [Toggle] — flat design (react-ui-theme-flat) (#536)
• [Button] — (breaking) fixed line-height in use link
• [CurrencyInput] — added onMouseEnter/Over/Leave props (#532)
• [Modal] — better close button positioning
• [ComboBox] — added maxLength prop