Name: Removal of get/setRemark and get/setPhysicalProperty from ChemObject
Author: Egon Willighagen
To remove the get/setRemark() and get/setPhysicalProperty() methods from
the ChemObject class.
First, they are not used in the CDK library itself, and only make the ChemObject
larger. Secondly, their use is easily replace by the more general
get/setProperty(), as remarks and physical properties are instances of the
general idea property.
Optionally, one can circumvent collisions with others in two ways:
If you use a String as a property identifier, as is done often in the CDK
library, you could use a namespace to prefix the property identifier. This
approach is followed by the current cdk.dict package. Secondly, one could
use a subclass of String, or any class, and use that class as a property
identifier; this is possible, because the ChemObject.setProperty() method
takes an Object as identifier, and not just String objects.