v1.0.5

1.0.5: Random upper limit of treasury decision

+ `balance_stable_pool` never burns USN
+ `buy` refund bugfix

v1.0.4

1.0.4: Changed definition of USN supply for `balance_treasury`

USN = total supply - pool liquidity
It leads to additional `get_stable_pool` call.

v1.0.3

1.0.3: Enable `balance_treasury` (interventions)

v1.0.2

1.0.2: USN contract released on the NEAR mainnet.