givens spacing fixes.
Redid Givens explanation.
Merge branch 'master' into givens
Added pseudocode to givens lab.
Rewrote givens solution and updated corresponding pseudocode.
Made consistend capitalization in Givens lab.
Added givens hessenberg problem.
Added solution to Hessenberg problem.
Also added some useful comments to the Givens lab.
Added description and thought questions to the Hessenberg problem in the
Givens lab.
Added modified Hessenberg problem to Givens lab.
Added solution to modifed givens Hessenberg problem.
Added an interesting note to the Givens lab.
Merge branch 'givens' into eig
Added problem to use Hessenberg form and QR factorization of Hessenberg
matrices to find eigenvalues.