Revert "Avoided redundant execution of boundcond"

This reverts commit 537e1fd59f457d06795ac72cbb1d114d6b7dee5e.
Revert "Concept of Parenthood added"

This reverts commit b3ec581d908e136c23320453207ead8d8e19ecd5.
Revert "First improvements"

This reverts commit 96386932160c5836dd6c5d04b326d9953ce24f30.
Revert "Revert "First improvements""

This reverts commit d964543639fcf77f67d33c9b9373bf1b9a4dc3a1.
Revert "Revert "Concept of Parenthood added""

This reverts commit 269000b39e15888cac765c85a9542b053f8c63d8.
Revert "Revert "Avoided redundant execution of boundcond""

This reverts commit 529767c8de755848f2d6989b6a67e6b1917d7b38.
Revert "Avoided redundant execution of boundcond"

This reverts commit 537e1fd59f457d06795ac72cbb1d114d6b7dee5e.
Revert "Concept of Parenthood added"

This reverts commit b3ec581d908e136c23320453207ead8d8e19ecd5.
Revert "First improvements"

This reverts commit 96386932160c5836dd6c5d04b326d9953ce24f30.