R-alpha: "[.ts" in 0.60.1

[Paul Gilbert]

I have a class "tframe" with more specific classes indicating how time is being
represented, such as

> class(tframe(data))
[1] "ts"     "tframe"

but now "[.ts" produces warning messages

> tframe(data)[2]
Warning: Not returning a time series object
[1] 2006.25

Even my simplest tests produce hundreds of lines of warnings, so I've commented
out the line
#                        warning("Not returning a time series object")
in "[.ts". I'm not sure if this is the best solution, but something is
necessary.

Paul Gilbert

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