bitovi/canjs — pull request #1051 by moschel (2014-06-04 07:37:25+00:00)
Title: less noisy dev warnings

1) only show the construct.extend warning once per page
2) only show each mustache key missing warning once per key (if this is in a loop it gets very noisy)
3) only show mustache key warnings for rendering properties, not for arguments to a helper
4) mustache key warnings were broken and showing up for all helper access also