TobCap/lazystreamr: Provides basic functions that handle lazy stream objects

This package provides basic functions that handle lazy stream objects. Function names start with `l` and the remaining letters are from Haskell's function name with a few exceptions. The structure and coding mainly comes from Scheme and Haskell. It is now unavoidable that the very long lazy stream causes stack-overflow because R does not have tail call optimization for tail recursion.

install.packages("remotes")
remotes::install_github("TobCap/lazystreamr")