VOILUT and modalityVOILUT use the double type in their calculation

[Paolo Brandoli]

When using the double type in the calculations the result value should be rounded after adding .5.

[Paolo Brandoli]

Addresses #363. Transforms implemented as specified by the standard, modified VOILUT test to accept a range of results

→ <<cset 15860deec88c>>

[Paolo Brandoli]

Addresses #363. Use range check in objctive-c test for voilut.

→ <<cset ef3a28ac05bd>>

[Paolo Brandoli]

Addresses #363. Updated changes log.

→ <<cset eb458359ddb4>>

[Paolo Brandoli]

Resolves #363 (tests may fail because of floating point rounding error in transforms)

→ <<cset 5ab2f15602dc>>

[Paolo Brandoli]

Opening 6.0.0.0 Closes #159, #290, #326, #339, #340, #347, #350, #355, #357, #358, #359, #360, #361, #362, #363, #364, #366, #367, #368, #369, #370, #371, #372

→ <<cset 41c6182f3c2d>>