Fix matrix views.
Fix template assignment operator in `MultiArray` class.
Throw an exception instead of returning a boolean.
Merge pull request #120 from DO-CV/maint-fix-multiarray-assignment-operator

[MAINT] Fix template assignment operator in `MultiArray` class.
Merge pull request #121 from DO-CV/maint-change-multiarray-resize-signature

[MAINT] Change `MultiArray::resize` signatures.
Fix compilation errors.
Merge pull request #122 from DO-CV/fix-matrix-views

[MAINT] Fix matrix views.
Merge branch 'develop' into fix-image-processing-module
Fix interpolation function.

This is not a particularly fast but it can be optimized later for
particular cases in 2D.
Add unit tests for linear interpolation.