I actually think we should leave bootstrapPage alone, it's a useful building block if you want e.g. multiple containers in a page (one example is full-bleed images in the middle of an app).

basicPage is probably useless now, I think it had a purpose in the bs2 era. But I'd rather not add soft-deprecation at the end of a release cycle, so let's move forward with that right after we ship 1.4.

@jcheng5 I think it's low risk to add soft deprecation, even at the end of a release cycle, because it doesn't actually change behaviour (just documentation).

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