v0.2.0 — 5 New Mutation Operators

What's New

Five new mutation operator families, expanding pytest-leela's mutation coverage:

Bitwise Operators

• BitAnd (&), BitOr (|), BitXor (^), LShift (<<), RShift (>>)
• Includes type-aware pruning for int/bool operands

Augmented Assignments

• All 12 augmented assignment operators (+=, -=, *=, /=, //=, %=, **=, &=, |=, ^=, <<=, >>=)
• Mutations swap between compatible operator families

Inline Conditionals (Ternary)

• x if cond else y → y if cond else x (swap branches)
• x if cond else y → x (remove else)
• x if cond else y → y (remove if)

Break/Continue Swaps

• break → continue and continue → break inside loops

Exception Handler Mutations

• Broad exception handlers (except Exception) → narrow (except RuntimeError)
• Narrow handlers → broad handlers
• Equivalent mutant detection for single-exception handlers

Stats

• 386 tests passing
• Full self-mutation coverage
• Validated on real Django project (roaming-panda: 98.5%+ kill rate)