I was sending an image (converted to Base64 string) thru a template and I couldn't decode it back to an image afterwards
Eventually after testing out simpler flow, I realised that the template was seeing non-alphanumeric chars in the Base64 encoding and that was mucking things up
So I replaced my {{ }} with {{{ }}} and all was well
So I'm suggesting that the node info could be changed from
Note: By default, mustache will escape any HTML entities in the values it substitutes. To prevent this, use {{{triple}}} braces
to something like
Note: By default, mustache will escape any non-alphanumeric or HTML entities in the values it substitutes. To prevent this, use {{{triple}}} braces
I did say it was minor 
