v3.2.0 Release

What's Changed

• New option to calculate User-Agent string asynchronously and cache it by @bhamiltoncx in #353
• Remove unneeded block. by @thomasvl in #354
• Extract _downloadedLength within the sync block. by @thomasvl in #355
• Use new GTMUserAgentProvider by default by @bhamiltoncx in #357
• Fix concurrency issue in GTMFetcherCleanedUserAgentString() causing crashes by @bhamiltoncx in #359
• Fix for local overwrite. by @thomasvl in #363
• Support -Wstrict-prototype by declaring no args. by @thomasvl in #364

Full Changelog: v3.1.1...v3.2.0