[PATCH] Clarify the syntax required when searching using timestamps.

[David Bremner]

Matthew Lear <matt at bubblegen.co.uk> writes:

> Need to be clearer about specifying time ranges using timestamps.
> Legacy syntax which predates the date prefix is still supported, but
> timestamps used in conjunction with the date prefix require additional
> syntax.

Pushed to master. Thanks for working to the documentation.

d