0.3.0.2

• fix bug in zero and one prisms.
• rename Natural to Positive.
• rename Whole to Natural.

0.2.0.2

• change data Natural to have a minimum bound of 1.
• add data Whole which has a minimum bound of 0.

0.1.0.2

• add minus function.
• add one and one' values.
• add list iso.

0.1.0.1

• Add support for GHC 7.10 and GHC 8.4.

0.1.0.0

• This change log starts.
• The initial version of natural.