[FEATURE] Improve input clipping behavior

[jatinchowdhury18]

Is your feature request related to a problem? Please describe.
Currently, the input signal is clipped before being input to the hysteresis model (see here). This clipping is meant to protect the hysteresis model from going unstable, but can cause undesirable distortion at extreme input gains.

Describe the solution you'd like
Fine-tune the clipping values for each ODE solver and oversampling amount so that the input is only clipped when on the verge of causing an instability.

Additional context
Depending on the results of the fine-tuning, maybe add an "unsafe mode" option to turn of input clipping all together.

[jatinchowdhury18]

Fixed with 19ec0de.