Google Toolbox for Mac - Session Fetcher

• #141 Handle empty and non-existing files to upload.
• #188 Support metrics collection.
• #191 Add Swift Package Manager support.
• Unit test threading fixes.

• #174 Release fetcher's active background task while awaiting retry.
• #170 Work around early iOS 13 betas still in use.
• #167 Make GTMSessionUploadFetcher's chunkSize property readonly.

Fixes some flakey tests, and does a little internal cleanup related to SDK version macros.

• #145 - GTMSessionUploadFetcher: pass through allowsCellularAccess from the parent request to subsequent chunk requests.
• #154 - Reconnect background session fetchers after UIApplicationDidFinishLaunching.
• #155 - Include support for TLSMinimumSupportedProtocolVersion.
• #160 - Use SecTrustEvaluateWithError on platforms that require it.
• #161 - Clean up macros guarding the use of TLSMinimumSupportedProtocol.
• #163 - Use WKWebView in GTMSessionFetcherLogViewController, rather than UIWebView

These should also allow use of the SessionFetcher with Catalyst.

Minor updates:

• #139 - Fix a synchronization-related crash in setUseBackgroundSession:
• #142 - Safely handle when the NSURLSession has been swizzled and its delegate replaced with a proxy.

• #126 Add a variant to -mockFetcherServiceWithFakedData:error:
• #133
  • Avoid parsing and generating the redirect URL if we are not changing the scheme of the URL.
  • Fixes for nullability build issue with more warnings enabled.
  • Don't build GTMSessionSyncMonitorInternal in DEBUG builds if NS_BLOCK_ASSERTIONS is defined. Unless GTMSESSION_ASSERT_AS_LOG is also defined.
• #134 Remove deprecated mutableRequest property.

• #118 Some string formatting fixes for newer Xcodes.
• #121 Ensure the body from an HTTP failure is exposed in the NSError during callbacks.
• #125 Ensure the content type header is also expose in the NSError so the data can be inspected.
• #125 Fix up some headers for resuming media transfers.
• #125 When the library creates the logging directory, tag it as not being backed up.

Exposing the HTTP payload on HTTP failures can result in more memory usage (there is a limit on how big of data it will expose in the error), so the library was bumped to 1.2.x so help call out this potential impact on apps at runtime.

• #115 Fixes for new format string checks in Xcode 9.3.

• #111 Support for CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF which CocoaPods seems to be adopting.

• Xcode 9.x updates/support
• Better handing for unknown size uploads (#102)
• Catch some range errors (they shouldn't happen, but we've seen some reports with some customization of the fetcher triggering them) (#102)
• Add a cancellation handler block property to GTMSessionUploadFetcher (#105)

• Sets default callback queue for recreated upload fetchers. #93
• Fixes for Xcode 9 GM #96

• Support for watchOS.
• Fix compatibility with Xcode 9 betas.

• Suppress some warnings (#77)
• Fix GTMSessionUploadFetcher hanging on retry (#83)
• Support for unknown file lengths in GTMSessionUploadFetcher (#84)

• Better synchronization around access to the background task id.
• Changed how background tasks are captured, so building an iOS Extension should be easier.
• Streaming support added to the testBlock.

Release to pick up PRs #69, #70, #71.

• tvOS support/cleanups
• UIApplication/background task improvements
• Remove legacy enum naming.
• Fix one infinite looping condition.

Tagging a release with #63 (delegate callbacks on queue), #64 (logging defaults), #65 (logview swift to delete), #66 (Xcode 8 updates)

Release to pick up #57 and #58.

New release to pickup PR #50, #51, #53, #55

Highlights:

• Stop exposing some things as mutable to finish out threading cleanups.
• More complete use of atomic/nonatomic to go with the threading cleanups.
• More threading handing to avoid some races/deadlocks.

New release to pickup PR #45, #46, #47, #48

Highlights:

• Refactoring to expose a block for custom challenge handling.
• Threading cleanup and enforcement internally.
• Expanding some HeaderDoc comments about usage.

New release with https://github.com/google/gtm-session-fetcher/pull/43 merged in to let other pods depend on it for the background task fixes and testing.

Named release for the podspec to get pushed with tvOS support included.

Cutting a new to capture a tweak to the callback queues that make them a little nicer to use (they default now instead of returning nil).

Release cut to provide something for the podspec to point at.