Honor "iothreads" when reading from seismic store, allowing OpenZGY to do more parallelizing internally.

More consistency checks when a ZGY file is opened.

See merge request !55

Allow reading version 1 ZGY files.

See merge request !54

filestats() changed to return a smart pointer.

See merge request !53

Some minor canges to the build scripts.

See merge request !52

Expose the ZGY files's uuid.

See merge request !51

Allow application to retrieve compression factor and similar statistics.

See merge request !50

Add link to the SEG-Y converter project.

See merge request !49

Logically delete the deprecated ZGY-Public binary SDK. Git will still be able to access it.

See merge request !48

Update the stale documentation in the source tree.

See merge request !47

Commit a newer version of the public pdf documentation and remove the rest. Users should fetch documentation from the build output anyway.

Update version number for ZFP compressed files from 3 to 4.

See merge request !46

Allow opening an existing ZGY file for writing.

See merge request !45

When passing create arguments from the Python wrapper to OpenZGY/C++, only pass those explicitly specified. Needed for update, and also to make sure the defaults are hard coded just one place.

Allow updating files also in the Python wrapper for OpenZGY/C++. Currently with more restrictions than in native C++. Work in progress.

Miscellaneous unrelated tweaks

See merge request !44