replace all NSE code with uses of lazy
needs dplyr and lazy from master to work

this will stabilize with dplyr 0.3.0
cache and autodep TRUE should always go together
ignore caches
need lazy goodness
better flip default

as non standard args require pair of functions
workaround for strange R.methodss3 bug. Tutorial regenerated here
implementing NSNSE for count
VAR fun supported in where
VAR supported in transmute
quick refactor to capture what our NSE does in one place
support for VAR in count
var subs not necessary. Simplicity wins
dead code
digest for lists of inputs.
a little aid to accelerate testing
ignore dir for test output
debug code slipped in
call the right version of a dply func
we are giving up on extention base and dplyr needs to wait until dplyr 0.3.0