Tons of new features

What's new:

• Search note command added
• Attach command added
• Clip command added
• View in WebApp command added
• Autocomplete in metadata block
• Unicode chars in tags properly displayed
• Creation and update dates are displayed in status

Evernote for ST3 featuring Open/Save commands

This release drops support for ST2 and only supports ST3.
It adds lots of features and will be the base for future developments.