DisUnity v0.3.0

• Fixed file name detection for split asset files.
• Fixed texture extraction for old Unity versions.
• Directories passed as arguments are now searched recursively for asset bundle files.
• Asset files from asset bundles now have their own subdirectories for processing.
• The -c argument is no longer required. Instead, the first non-switch argument is automatically assumed to be the command.
• Added commands "extract-txt" and "extract-struct", which does the same as "dump" and "dump-structs" with the output written to individual text files.
• Renamed "unbundle" to "bundle-extract" and added "bundle-list" to list just the packed bundle files.