Adding an --update option for convenient updating.
Adding chebfun --version command.
Merge branch 'development' into feature-update

Conflicts:
	@chebfun/chebfun.m
Merge branch 'feature-chebfunroot' into feature-update

Conflicts:
	Contents.m
Use CHEBFUNROOT() in UPDATECHEBFUN().
Do not zero coeffs in PLOTCOEFFS. Closes #900.
Add a barplot option to PLOTCOEFFS().
Merge branch 'development' of github.com:chebfun/chebfun into feature-update

Also move updateChebfun() to chebfun.update(), which is nicer to reference.

Conflicts:
	@chebfun/chebfun.m
	Contents.m
Merge branch 'development' into feature-update

Conflicts:
	@chebfun/chebfun.m
Ensure directory is not removed if something fails.
Surpressing output from plot when linear problems are solved.
Change cheboppref.damped to cheboppref.damping.
Merge remote-tracking branch 'chebfun/make-nh-happy' into feature-chebpolyplot-bar
Some tidying of barplot.
Fix chebfun2 construction from scalar function handle.
Suppressing warnings in CHEBTEST.
...
Removing tests/plotting/
Merge branch 'development' of github.com:chebfun/chebfun into development
Merge branch 'development' of ssh://github.com/chebfun/chebfun into fix-cheboppref