step: pypyr.steps.regex

[yaythomas]

string parsing, regex matching module

raiseError/throw switch to interrupt if not found.

return as [] for >1 matches

[yaythomas]

of course, even better finding a way of doing string parsing that

1. doesn't involve regex
2. doesn't involve convoluting the dsl - core principle, if it's a one-liner in bash/python, pypyr dsl shouldn't turn it into a 5 liner with its own weird grammar