Do not use this release! A critical bug with ExtractFiles was found!
Added three new properties to SevenZipCompressor:
ZipEncryptionMethod to set the encryption method in zip archives,
EncryptHeadersSevenZip to encrypt file names, etc. in 7zip archives (so one has to enter password even to open such archive),
ScanOnlyWritable (-ssw in 7z.exe) is the option to add files only open for writing in CompressDirectory overloads.