move fun into Pipe as closure
refine doc
suppress Pipe object header (#22)
implement str method for Pipe (#24)
add Pipe.header option to allow suppression of header in print (#22)
By default, Pipe.header = TRUE.
When Pipe.header = FALSE, all Pipe headers in print and str will be suppressed.
refine option and generic functions for Pipe (#22, #24)
update readme
update vignette for Pipe (#23)
update docs for Pipe (#23)
dont run examples
update vignettes
update readme
update pkg info
fix pkg info
change email