Segysak

* Fixes to 2D loaders.
* Support for float (sub integer) values on vertical axis.
* Experimental support for ZGY - requires manual install of openZGY.

Back port of v0.3 features primarily for `segy_writer` but also including some updates to docs and bug fixes.

Patches for segy_writer and docs.
- segy_writer function for 2d, 2dg, 3d, 3dg writing
- updates to docs
- contribution and coc guides
- bug fixes

End Transform 2020

Add arbline extraction.
Fixed export for 3D SEG-Y
Improved Documentation and Examples

Transform 2020 midweek release. patch 0.2.3 for deployment.

- Update docs
- Update xy sampling
- More Detailed Examples
- Speed up header scan and increase robustness of segy_loader
- Fix segy output
- Improved header statistics and reporting
- Added scrape and dump to cli tool.

Transform 2020 midweek release,

- Update docs
- Update xy sampling
- More Detailed Examples
- Speed up header scan and increase robustness of segy_loader
- Fix segy output
- Improved header statistics and reporting
- Added scrape and dump to cli tool.