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# Changelog
## version 0.4.1
- R/chent.R: Improve print method for `pai` objects.
## version 0.4.0
- R/chent.R: PubChem has changed the names of the SMILES codes they
provide. The former isomeric smiles that was incorporated in our chent
objects as “Pubchem_Isomeric” is now simply calles SMILES, and is
incorporated in our objects as “PubChem”. The SMILES code formerly
given as “canonical” is now termed “connectivity SMILES” because it
does not contain isotopic or stereochemical specifications. In the
chents object, it is now available under the name
“PubChem_Connectivity”. This is a breaking change, so objects
generated with versions \< 0.4.0 may produce errors when used with
current versions.
## version 0.3.7
- R/chent.R: Do not attempt to load a chyaml file per default, as the
format of such a file and the resulting chyaml list object is not
documented and would need to be inferred from its use in the pfm
package.
## version 0.3.6
- R/chent.R: Set the fields `smiles`, `inchikey` and `mw` to NA if these
fields are still NULL at the end of the initialization, with `source`
attribute set to “user”, assuming that the initialisation was
carefully done and `pubchem` and `rdkit` were skipped because the
structure is not well-defined.
Please refer to the ChangeLog for commit messages up to November 2021,
where I changed the GNUmakefile not to include commit messages in that
file any more.
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