0.4.3 [2019.08.27]

• Allow singletons-2.6.

0.4.2 [2018.09.18]

• Allow singletons-2.5.

0.4.1 [2018.05.02]

• Add a Num Nat instance.
• Implement signum in the PNum/SNum instances for Nat.
• Define defunctionalization symbols for Lit.
• Define someNatVal.

0.4.0.4 [2018.01.09]

• Allow singletons-2.4.

0.4.0.3 [2017.11.03]

• Allow singletons-2.3.