Log Message:
Update to 1.0.0

Upstream changes:
VERSION 1.0.0

    You can override the default printing method by providing a proto_print \ 
method in your object.

    graph.proto() has been removed since it relies on packages that are no \ 
longer on CRAN. name.proto() is no longer exported since it was used primarily \ 
by graph.proto().

    Hadley Wickham has taken over maintenance.

    All outstanding R CMD check problems have been fixed.

    New NAMESPACE file that ensures that proto works when not attached.