v1.3.0

• Use LC_ALL=C for sed, awk and grep, preventing possible "Invalid byte sequence" errors (was already done for tr and sort).
• Use perl instead of non-GNU sed for newline replacement in multi-line history.

v1.2.1

• Fix multi-line command handling for macOS.

v1.2.0

• Added option to specify signing key.

v1.1.0

• Added test framework;
• Allow environment variables to be overridden.

v1.0.0

• All features described in README.md.