CFA Library: Compress and extract files from a single file

This package can compress and extract files from a single file.

There is a class that can create a compressed archive file. Files may be compressed and added to the archive, optionally encrypting the contents using a given password.

Another class can extract the files from a previously compressed archive, eventualy decrypting the file contents using the original encryption password.

There are also two other classes for listing, adding or removing files in compressed archive files.