Prepare to release v5.1.2

Updates to release v5.1.1

Update to release v5.1.0

Updates to release v5.0.9

Updates to release v5.0.8

Update to release v5.0.7 fixes kartik-v#1496

Update to release v5.0.6

Fix kartik-v#1449: Lock file input while files are being read for pre…

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Update to release v5.0.4

Update to release v5.0.3