v3.0.0

Major refactor of the extension's source code and the pop-up window's interface.

• Complete overhaul of the popup user interface
• New "input groups" feature that allows converting and viewing multiple values at once
• Added keyboard shortcuts for navigating and interacting with the pop up interface
• Added help page to pop up containing the shortcuts list and various tips
• Invoking utime from the omnibox or context menu will now display the conversion result in a desktop notification, with an option to copy the value to your clipboard
• New icon