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- Support for self-calibration within mosaics (interpolation over multiple fields/scans).
- switch to nterms =2 imaging for high S/N cases
- Amplitude selfcal (solnorm = True) following successful phase selfcal
- handling bright sources outside main primary beam (edge case?)
- Per-spw calibration (defined allowed for solutions across entire EB already, may not be needed)
- allowing applymode=calonly for some data to attempt to solve for those data by cleaning deeper holding solint constant
- Interpolation from high S/N target to low S/N target
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