------------------
- added `setuptools` as dependency
- switched to underscores in project name
- added `discard-by-name` filter
- requiring seppl>=0.2.13 now
- added support for aliases
- added placeholder support to tools: `adc-convert`, `adc-exec`
- added placeholder support to readers: `from-adams-ac`, `from-subdir-ac`, `from-txt-ac`, `from-adams-sp`,
`from-commonvoice-sp`, `from-festvox-sp`, `from-hf-audiofolder-sp`, `from-txt-sp`, `from-data`, `poll-dir`,
`from-pyfunc`
- added placeholder support to writers: `to-adams-ac`, `to-subdir-ac`, `to-txt-ac`, `to-adams-sp`, `to-commonvoice-sp`,
`to-festvox-sp`, `to-hf-audiofolder-sp`, `to-txt-sp`, `to-audioinfo`, `to-data`