As per PR/42962 provided by Ivan "Rambius" Ivanov.
While here, update MASTER_SITES
Changes since 0.16.2:
Changes in release sitecopy 0.16.6, 16 July 2008
* DAV: Fix crash with progress bar enabled with neon 0.27/0.28.
Changes in release sitecopy 0.16.5, 16 July 2008
* DAV: Fix SSL cert caching to avoid repeated prompts.
* Update to neon 0.28.3 and support neon 0.24.x through 0.28.x.
Changes in release sitecopy 0.16.3, 12 March 2006
* DAV: Add PKCS#12 client cert support; "client-cert /path/to/cert.p12"
* Update to neon 0.26.0 (0.24.x and 0.25.x still supported).
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