* - renamed exists to contains
- fix compare for ints where item is empty
* - checking and optionally dropping ndb_poly_seq_scheme
- fix in iterator_proxy
* formatting data in reconstruction
* Version bump
* Attempt to get code compiling on macOS
* attempt 2 to build on macOS
* Added remove column
* Added rename_column
Added item_alias
Rename columns in reconstruct
* macOS...
* Fixed serious bug in emplace of both datablock and file.
* renaming field and column to item
* replace tag with item or item_name
* Fix validate pdbx
* version bump
* atom_site_anisotrop check
* - changed compound::is_known_peptide/is_know_base
- Add audit_conform only if file is really valid
- Added reconstruction code for PDBx
* pdb2cif work
* gcc diagnostics and clipper
* Fixing pdb2cif, and sequence checking
* work around bug in old gcc
* fix reconstruct sequence
* formatting
* some small optimisations
* Fix url in compound message
* Fix operator= for item_handle
* Fix operator= for item_handle
* new update_value in category
* test builds faster now
* Use Catch2 version 3 if installed
* catch22
