lme4 1.0-4 now on CRAN
I'd like to say we could provide a 3.0.0-compatible version from R-forge, but it gets a bit tricky because there's no obvious way to distinguish among patch releases within an R repository structure (i.e. we can easily provide different versions for 2.15 vs 3.0, but not for 3.0.0 vs 3.0.1) ... I hate to join the "why don't you just upgrade?" crowd, but it does feel like updating from 3.0.0 to 3.0.1 would be fairly painless (?).
If we were voting, I would say leave it as is. Developer's time is precious and supporting outdated versions of R seems lower than other features. Perhaps a different approach would be taken for a feature complete/stable package, but I think there have been some exciting developments and some future ones planned for lme4, and I would hate to see those efforts stymied by backwards compatibility.
I'm open to other suggestions. Ben Bolker
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Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://joshuawiley.com/ Senior Analyst - Elkhart Group Ltd. http://elkhartgroup.com