Prepare release v0.1.2

Author: rafaelha

CHANGELOG.md

@@ -14,7 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 - `SPP` and `SPP_DAG` instructions — generalized S gate that phases the -1 eigenspace of Pauli product observables by i or -i. Supports multi-qubit Pauli products and inverted targets (#97)
-- `MXX`, `MYY`, `MZZ` two-qubit parity measurement instructions, delegating to existing MPP infrastructure. Also adds `II_ERROR` support (#96)
+- `MXX`, `MYY`, `MZZ` two-qubit parity measurement instructions (#96)
 - `MPAD` instruction for padding the measurement record with fixed bit values (#95)