v0.17.2

Added

• digital_filters - added multi_exponential_decay function which can be used to fit and extract the exponential decay coefficients when there are multiple time constants. It supports any number of exponential decays.

Changed

• digital_filters - exponential_decay function now internally uses the multi_exponential_decay function for calculation. The user-facing interface of exponential_decay remains unchanged, ensuring backward compatibility.
• digital_filters - multi_exponential_decay function has the following formula: s * (1 + a1 * np.exp(-x / t1) + a2 * np.exp(-x / t2) + ... + an * np.exp(-x / tn)), where s=1 by default.