Release pyeit-1.2.1

A minor fix release. init=True flag is dropped in solve_eit and compute_jac.

What's Changed

• add jac_normalized in setup parameter for jac and remove init flag from solve_eit,... by @DavidMetzIMT in https://github.com/liubenyuan/pyEIT/pull/51

Full Changelog: liubenyuan/pyEIT@v1.2.0...v1.2.1