Added Acknowledgements, fixed Title case, bumped date.
or and variants gain a capture arg.
token renamed as group
group renamed as char_class; group_and_repeat_clas renamed as repeat_in_class
Increased R version dependence due to OlsonNames.
removed old comment
linux -> posix in fn names
updated alternation to match new syntax
updated examples
updated fn names to match new syntax
Fixed repeated for caes of infinite hi.
Added is/as/print/format regex methods.
arrows renamed math_arrows to avoid clash with fn in graphics pkg.
Added roman fn for matching roman numerals.
updated examples
warning about API change in 0.0-2
roxygenised
Added regex fn as wrapper to paste0.
Fixed ARROWS -> MATH_ARROWS.
Regular expressions now have a class of "regex".