[4.5.5]
+* cut: new feature: when used to select ranges of byte offsets (as opposed
+ to ranges of fields) and when --output-delimiter=STRING is specified,
+ output STRING between ranges of selected bytes.
+* rm -r can no longer be tricked into mistakenly reporting a cycle.
+* when rm detects a directory cycle, it no longer aborts the entire command,
+ but rather just the affected command line argument.
[4.5.4]
* cp no longer fails to parse options like this: --preserve=mode,ownership