0.14.0

BACKWARDS INCOMPATIBILITIES:

• Remove NL and Whitespaces parsers, these are achievable using the trim parsers
• Change Trim parsers to always skip all whitespaces and return specific whitespace error
• In text.LeftTrim prefer a not found parse error over a whitespace error if the position is the same

IMPROVEMENTS:

• Add struct wrapper for parser functions to allow recursive parser definitions
• Simplify parsley.Error, remove unnecessary msg field (and therefore unnecessary .Error()
• Introduce notfound errors when a parser doesn't match
• Only collect notfound errors in any/choice if they are not in the starting position