Release v0.2.0

Added

• Write abilities update-translations (translate / approve / reset, dry run by default, expected_current, overwrite_reviewed, protected_terms, note, batch_id) and revert (by change_id or batch_id), plus get-change-log. Each write is one conditional UPDATE of the displayed row; strings without a row in a language are rejected with sat_not_found; text that wp_kses or TranslatePress's sanitising would alter is rejected with sat_sanitization_changed.
• Change-log table {prefix}sat_changes (dbDelta, option sat_db_version), created on activation or on first use after an update; uninstall.php drops it.
• Read-only switch: constant SAT_READ_ONLY or option sat_read_only makes revert and real update-translations writes return sat_writes_disabled; dry runs stay allowed and report writes_disabled: true.
• A bare & in a translation is converted to & before validation, with warning sat_ampersand_encoded.
• Change log column row_id (sat_db_version 2): revert restores the exact row written, with the same conditional UPDATE; a row is never located by its text.
• Validator::check(): errors sat_html_mismatch, sat_placeholder_mismatch, sat_too_long, sat_invalid_utf8; warnings sat_numbers_mismatch, sat_identical_to_original, sat_protected_term_missing; with unit tests.

Changed

• dev-latest builds are stamped X.Y.Z-dev.<run> in the zip only, with the committed version set to the next release, so a test site following develop is offered every build and the release replaces them. In branch mode the latest dev build stays offered even once installed (README).