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* Add capability for building summed waveform over channel subset by DCichon in https://github.com/AxFoundation/strax/pull/565
* Fixed delta peak timestamp problem by FaroutYLq in https://github.com/AxFoundation/strax/pull/702
Notes
- Breaking changes in the peak-building chain due to 565
New Contributors
- DCichon made their first contribution in https://github.com/AxFoundation/strax/pull/565
**Full Changelog**: https://github.com/AxFoundation/strax/compare/v1.3.0...v1.4.0