Add command for computing separable formats of PDOs. Finally here! Yay!
Update chebop2, so that separable representation is computed.
Make SeparableFormat a static command. §
Update the rank command in chebop2.
Add ability to have rhs given inside the operator.
Allow N.bc = 0 as shorthand for N.lbc = 0; N.rbc =0; N.ubc = 0; N.dbc = 0;
Fix length of a chebfun2.  A zero chebfun2 should have length [1,1].
SeparableFormat -> separableFormat
Add change the name of the test...
Coding style review.
Remove two comment lines.
Merge branch 'feature-chebop2-interface' of https://github.com/chebfun/chebfun into feature-chebop2-interface
Update help text for chebcoeffs2.
Forgot to change SeparableFormat -> separableFormat in rank.m
Merge branch 'feature-chebop2-interface' into feature-chebop2-addons

Conflicts:
	@ultraS/instantiate.m