1.2.1

• Remove deprecated pgf_print_expr_tuple
• Added an API for cloning expressions/types/literals

1.2.0

• Stop pgf-shell from being built by default.
• parseToChart also returns the category.
• bugfix in bracketedLinearize.

1.1.0

• Remove SG library.

1.0.0

• Everything up until 2020-07-11.