Fixes and Additions to WebDAV querying

Bug Fixed: Calling completion handler for upload tasks

Added including (file object properties) argument to WebDAV provider this is the sample code for fetching ETag and size property of file from WebDAV:

provider.attributesOfItem(path: "/path/to/file", including: [.fileSizeKey, .entryTagKey], completionHandler: { attributes, error in
    print(attributes.size)
    print(attributes.entryTag)
}

This is also true for contentsOfDirectory() method

Added FTP support, major improvements and bug fixes

This release adds FTP protocol support with some minor limitations. (see below)

Background sessions can be set now for sessions while not recommended due to serious bugs in Apple CFNetwork implementation when you want download a file with a ranged request.

A new class, FileProviderStreamTask is introduced which is technically a replica of Apple's URLSessionStreamTask with iOS 8 support using low level Core Foundation routines.

Here is the list of improvements:

• Credential is open to set/change anytime.
• Deprecating create(file:) method which was a duplicate of writeContents(path:contents:) method. Now you can pass nil for data argument to create an empty file.

Here is the list of other bug fixes:

• WebDAV file listing may omit files contains space in name.
• Delegate's progress handler didn't call when uploading/downloading was in progress.
• Swift 3.1 warnings.

FTP provider limitations:

• searchFiles() is not implemented and removeItem() won't delete not-empty directories in servers that don't support SITE RMDIR extension command. This limitations will be removed when ftpRecursiveList() is implemented.
• Active mode is not implemented, technically saying, I didn't find a workaround to set tcp port manually in CFNetwork API
• FTP over TLS (FTPS) protocol is not tested while implemented.

Added NSCoding support

Also:

• Better relative path handling in WebDAV.
• Making deprecated methods obsolete.

Bugfixes and Optimizations

Optimized PDF thumbnail/meta handling.

• Fixed relativePath(of:) crashing bug.
• Fixed ISO speed and GPS Area image meta, better ExposureTime calculation.
• Fixed Dropbox name NOT BEGINSWITH % search query.
• Better LocalFileObject initialization with empty path.
• Refactored DispatchTime.
• Refactored methods to extensions.

Fixes WebDAV authentication problem, minor lints/optimizations

Fixed #29 Also:

• obsoleted LocalFileProvider.init(directory:domainMask) for LocalFileProvider(for:in:).
• Fixed BEGINSWITH typo in searchFiles() using query strings.

Fixed OneDriveProvider bugs

Now OneDriveProvider should be working. Some refactors and removing obsoleted functions has been done.

Also:

• fixed and enhanced searching files in Dropbox

Added NSPredicate query to searchFiles() method

searchFiles() method now moved to FileProviderBasic, where it belonged. Now there is two version for searchFiles(), one of them gets String for query to search within files name, also you can set a NSPredicate object to query to filter files based on properties like size and modification date, please read inline help for sample predicates.

Also:

• all methods are now open to become overridable
• Fixed Documentation errors about urlCache

Documentation completed

-fixed a smal bug when LocalFileProvider is init with /

Added isReachable method to test connectivity

• Fixed iCloud provider bug when moving/deleting evicted file.
• Fixed iCloud provider paths bugs in returned FileObjects
• Updated documentation

Equatable FileProvider & FileObject, fixed Local provider bug

Fixed a critical bug in LocalFileProvider which causes copyItem(toLocalURL:) and copyItem(localURL:) don't work