backlog of kracht

Prelude for Guile Scheme, an opt-in enhancement to the standard library
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show done?show rejected?
add more list predicates
add base 16 base 32 and base64 encoding decoding capabilities
split prelude into more modules, and use #:re-export
escape more types of quotes properly, like curly quotes, guillaumets, single quotes curved, etc, this causes DB problems otherwise