In DicomHero remove the Mutable classes, make the base classes mutable

[Paolo Brandoli]

Mutable classes add many complications in the common case when a loaded dataset must be modified and re-encoded. Move all the mutable methods into the base classes and remove the Mutable classes.

[Paolo Brandoli]

Addresses #357. Updated requirements

→ <<cset 7343c15a6970>>

[Paolo Brandoli]

Addresses #357. Removed Mutable classes

→ <<cset c7f9229145a3>>

[Paolo Brandoli]

Addresses #357. Updated changes logs

→ <<cset 54762dfae8ef>>

[Paolo Brandoli]

Resolved in a04a069034280ec2c78efc80cd6ec48f2422c7f0

[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>>