#42 Extend and polish class hierarchy for sampling criteria

[Julien Bect]

A first draft of a class hierarchy for sampling criteria has been merged to default:
https://sourceforge.net/p/kriging/hg/ci/df7a10e0a56e741e3ebd35a2a793d5f3d90e0836/

It must now be polished (test, documentation, etc.) and extended with new sampling criteria.

See also ticket #41: https://sourceforge.net/p/kriging/tickets/41

[Julien Bect]

Postponing : Sampling criteria classes have been removed from branch 2.4.x ...

[Julien Bect]

STK 2.5.0 will be released soon, with three simple @stk_sampcrit_* classes available with an "experimental" status.

Leaving this ticket open to keep track of future work on sampling criterion classes.

[Julien Bect]

STK 2.5.0 has been out for some time, and contains sampcrit classes for EI, EQI and AKG.

EHVI and EMMI are only available as *_eval functions; see #83 and #84.

An drafty implementation of IAGO available on the default branch but not included in the releases yet.

One SUR sampling criterion for contour/probfail estimation is available from the BSS repo.

...

[Julien Bect]

Moved to github: https://github.com/stk-kriging/stk/issues/10. Closing this ticket.