feat: POA, without saving traceback (rust-bio#620)

* no traceback recaluclate, works for global now

* suffix x clip y clip added

* add xclipping and y clipping

* formatting 1

* formatting 2

* ...

* ..2

* add documentation

* formatting.

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Co-authored-by: Johannes Köster <[email protected]>

Author: lorewar2