Segfast

What's Changed
* Non-standard headers loading by AlexeyKozhevin in https://github.com/analysiscenter/segfast/pull/6
* Allow loading trace headers for a subset of traces by alexanderkuvaev in https://github.com/analysiscenter/segfast/pull/9
* Add docs by AlexeyKozhevin in https://github.com/analysiscenter/segfast/pull/13
* Update release workflow by AlexeyKozhevin in https://github.com/analysiscenter/segfast/pull/14

**Full Changelog**: https://github.com/analysiscenter/segfast/compare/1.0.1...1.0.2

Making some attributes a property: namely, `sample_interval` and `delay`, as they may be absent in the SEG-Y file.

Release version of `segfast`