Make storage of moments consistent with manual

The deciles of some posterior moments were erroneously saved in a field
Distribution, while the manual specifies they are name deciles.
Fixed header.
Added missing header (license).
Rewrote @dynSeries/subsref recursively. Improved error messages. Fixed bugs (missing time member).
Removed commented lines of code.
Added unitary test. Removed useless addpath commands from unitary test.
Cosmetic change.
Added unitary test.
Cosmetic change.
Removed useless addpath command from unitary tests.
Changed unitary test.
Added unitary test.
Cosmetic change.
Changed unitary test.
Added missing header license.
Removed isint function in @dynSeries/private.
Fixed bug (missing time member).
Removed useless addpath command from unitary test.
Allow declaration of dates with lowercase frequencies.
reporting: xrange & yrange