txObject ATK for C++ & Python

File Release Notes and Changelog

Release Name: 1.3.7

Notes:

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Changes: Changes from 1.3.6 to 1.3.7 --------------------------- 1) some methods to return const for container types where appropriate (layer1) 2) add virtual destructor to class txAbsPacker (layer4) 3) rework txStateMgr method : check for determinate contact (layer5)