Release Notes: 0.5.0b4

What's new since 0.5.0 beta 3?

• Fixed incompatibility with Mercurial 3.4.
• Performance and memory consumption improvements.
• Work around networking issues while downloading clone bundles from Mozilla CDN with range requests to continue past failure.
• Miscellaneous metadata format changes.
• The prebuilt helper for Linux now works across more distributions (as long as libcurl.so.4 is present, it should work)
• Updated git to 2.18.0 for the helper.
• Properly support the pack.packsizelimit setting.
• Experimental support for initial clone from a git repository containing git-cinnabar metadata.
• Changed the default make rule to only build the helper.
• Now can successfully clone the pypy and GNU octave mercurial repositories.
• More user-friendly errors.