do not clean
when building pkgdown site
#374
Merged
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This is the only reliable way I see to stop the pkgdown action from wiping the existing release site when building a dev site. The disadvantage is that if a page is completely removed, although it will not be linked anymore, it will still exist. This is a known problem that apparently there's currently no good known workaround for. In the r2dii packages I implemented a manual switch that one can use to wipe old files that should no longer exist.