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By default, packages are now byte-compiled on installation.
All packages are by default byte-compiled on installation. This makes the installed packages larger (usually marginally so) and may affect the format of messages and tracebacks (which often exclude ‘.Cal’l and similar).
The ‘"Date"’ and “date-time” classes ‘"POSIXlt"’ and ‘"POSIXct"’ now have a working ‘`length<-`’ method, as wished in PR#17387.