This release contains one serious bug fix over 7.4.4.
A dump/restore is not required for those running 7.4.X.
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Repair possible crash during concurrent B-tree index insertions
This patch fixes a rare case in which concurrent insertions into a B-tree index could result in a server panic. No permanent damage would result, but it's still worth a re-release. The bug does not exist in pre-7.4 releases.
