v3.20
- Update to libmseed 2.19.4
- Reorganize miniSEED output writer such that re-packed records that result in two or more records are properly included in the output. This handles the odd cases where removing data from a record results in more Steim compressed data than before.
- Add -SDS layout option with PR from @bonaime
- Add warning for impossible combinations of selections that specify multiple, distinct time ranges from a single record.