feat: [GH-52] Add strict(...) condition wrapper#56
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Introduce a strict(...) grouping keyword that wraps conditions requiring same-destination evaluation when they share a navigation key prefix. Parser produces a new StrictConditionTree AST node; semantics are enforced engine-side (cinchapi/concourse#533). Visitor gains a default visit(StrictConditionTree) that transparently passes through to the wrapped condition — visitors that must honor strict semantics should override. Reserves "strict" as a keyword. closes #52
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Introduce a strict(...) grouping keyword that wraps conditions requiring same-destination evaluation when they share a navigation key prefix. Parser produces a new StrictConditionTree AST node; semantics are enforced engine-side (cinchapi/concourse#533).
Visitor gains a default visit(StrictConditionTree) that transparently passes through to the wrapped condition — visitors that must honor strict semantics should override. Reserves "strict" as a keyword.
closes #52