Thanks for this great tool!
I found that my natural inclination was to type my password and then hit the Enter key, and I kept expecting that to trigger decryption. It looks like there's no handling for the Enter key, so I thought I'd add it as a feature to see if you find it useful.
Fixes#7 using a Blob rather than btoa (as btoa() creates a Base64-encoded ASCII string).
Side modifiation, the {{VALUES}}\n substitution does not works on my environnement as the substituion is searching for a litteral \n in the template. Feel free to remove this modification if it's not relevant and I juste missed something along the way :-)
