fixes #49
merge from master almost at 0.4.0

Merge branch 'master' into dev

Conflicts:
	pkg/R/common.R
undo merge damage
version bump
experimenting with advance DESCRIPTION entries
magic wand doesn't work with primitive functions
Merge branch 'master' into dev at 0.4.0

Conflicts:
	pkg/DESCRIPTION
eliminate funky double eval - test pass
merge from master

Merge branch 'master' into dev

Conflicts:
	pkg/DESCRIPTION
merge from master

Merge branch 'master' into dev

Conflicts:
	pkg/R/common.R
commented code be gone
add memoization for pipes
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