sanitizeRegex was stripping dots in permalinks when generating
RenderIndexes (noted during feed/rss generation).
permalink was being set to `.../indexxml` instead of `.../index.xml`.
Adding "dot" to the regex whitelist fixed the issue.
"time"
)
-var sanitizeRegexp = regexp.MustCompile("[^a-zA-Z0-9/_-]")
+var sanitizeRegexp = regexp.MustCompile("[^a-zA-Z0-9/_-.]")
// TODO: Make these wrappers private
// Wrapper around Fprintf taking verbose flag in account.