rename default branch

[James P. Howard, II]

Like a good little grad student, I am writing my proposal and
dissertation in LaTeX and have the good sense to deploy Mercurial on
this at the start.

Given that the dissertation is a superset of the proposal[1], it seems
to me that my plan should be to operate in the default branch until
such time as the proposal and dissertation diverge (likely before the
proposal is finalized).  So it makes sense to me that I should rename
the default branch to "proposal" and then branch "dissertation" from
it at some future date.

With this in mind, how do I rename default to something meaningful?

James

1.  For out proposes, this is true.

-- 
James P. Howard, II, MPA MBCS
jh at jameshoward.us