Allow CHEBOP backslash to return multiple outputs.
Making check for whether initial guess solves BVP work for systems.
Fixing LNT's bugs in chebpolyplot.
Small correction to help text in chebpolyplot.
Merge remote-tracking branch 'chebfun/fix-chebop-initSolCheck' into development
Merge remote-tracking branch 'chebfun/fix-chebfun2-chebpolyplot' into development
Loosen tolerance for colloc on Orr-Som to prevent failure.
Some tidying up.