doc: add marble diagrams

fix: add more iter operators

fix(deps): update module github.com/urfave/cli/v3 to v3.8.0 (#159)

fix: add TapThunkK

fix: undo Pipe and Flow changes, did not have the desired effect

fix: try to change the way Pipe and Flow are structured

fix: introduce async iterators

fix: add ModifyF

fix: add Filter and FilterMap

fix: implement filter and filtermap

fix: add lenses for Hostname and Port

fix: clarify behaviour of array.Concat

fix: add inline flags

fix: add FromIso

fix: add FromIso