v0.2.1: Refactor all source-allocations

Refactor all source-allocations by mold-allocations and assigments.

Soucer-allocation generates memory leaks that must be avoided.
Hopefully, mold-allocation/assignment should not.

Stable release, fully backward compatible.

v0.2.0: API refactoring

Now efficient `intent(in)` interpolator can be defined.

Stable release, **not** backward compatible.

v0.1.4: Add support for mapped alpha and alpha Z

Stable release, fully backward compatible.

Alpha seems to work properly. Mapped alphas to be checked, somenthings
look odd.

v0.1.2: New (sane) API, work as expected up to S=5

+ New (sane) API: re-introduced real abstrac parents;
+ accuracy verified up to S=5.

v0.1.1: Pimp sin reconstruction test, unstable release, fully backward

compatible.