Should ZipEntry.CompressionMethod be trying to check for supported methods?

[Numpsy]

Something that has been mentioned in other discussions (e.g. in #333) is the question of if it's correct that the property setter for ZipEntry.CompressionMethod should try to check if the specified method is 'supported', given that that is really a question for the container and not the entry (especially when it works off a static list of methods that is always the same regardless of it being ZipFile , one of the streams etc).

At the time that was sort of needed because other things depended on that check to reject methods they don't support, however:

1. Validate compression method in all ZipFile.Add overloads #421 changed the Add() methods on ZipFile to check the compression method themselves.
2. Change ZipOutputStream.PutNextEntry to explicity validate the requested compression method #422 change ZipOutputStream.PutNextEntry() to check the compression method of the new entry itself.

So - is there anything else that depends on the existing property setter before removal could be considered?

[Numpsy]

Fixed by #587 I think