是否可以参数化r包版本？

I'm finding myself updating a the version and date of the r-packages that I maintain quite often. Both the version and date exists in DESCRIPTION, packageName-package.Rd and also man/packageName-package.Rd. I've forgotten to update in one file several times. These were originally generated by the package.skeleton command. Is there a similar command/utility script to update the version?I'm finding myself updating a the version and d