Revision history for Context-Vars

0.02    2026-10-14
        - Import arrays and hashes as context variables.
        - Scope a change at any depth of a structure to the sub that makes it.
        - A variable now holds its own copy of a plain hash or array, at every
          depth: a change made through it in a sub is undone when the sub
          returns, and changing the original does not change the variable.
          In 0.01 the referent was shared.
        - Support local on whole arrays and hashes and on their elements.
        - Add elem_fetch and elem_store to the C ABI, version 2.

0.01    2026-10-14
        - First release.
