Add fix and unfix functions for parameter fixing and unfixing
#249
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|---|---|
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| 4m 24s | |
| 6m 15s | |
| 3m 45s | |
| 4m 57s | |
| 9m 19s | |
| 2m 29s | |
| 3m 28s | |
| 3m 52s | |
| 41m 22s |