suppress warnings for fig_path() because in case of check errors, these warnings will obfuscate the error log (and you will get Ripleyed)
should declare explicitly parent.frame() as the parent of list2env() in knit_expand()

otherwise this will not work:

local({
  x = 'hi'; knit_expand(text='x is {{x}} and y is {{y}}', y = 10)
})
uncomment the test case of objects in parent.frame() for knit_expand()
cosmetic
make vignettes
make examples
make news
version 1.0 is ready for CRAN
cosmetic changes (order engines alphabetically)
add the contributor Nacho Caballero @nachocab for #459
bump version and roxygenize
news for coffeescript