John May released CDK 1.5.4

Short post, but with big implications. John released CDK 1.5.4 which mostly consists of great work on his side on various important corners of the CDK. Make sure to read his blog, and some highlights:

• New SMILES behaviour - parsing
• Improved Substructure Matching
• AllRingsFinder, Sport Edition

Everyone who is still using a version from the CDK 1.4 series, should really consider switching over (just read the 1.5.2, 1.5.3, and 1.5.4 changelogs for the reason why). It will make your product faster and more functional.

My contribution to this release mostly consists of the new Isotopes work. As John nicely summarized: