Small edits to cwrap lab
Merge branch 'master' into cwrap
Merge branch 'master' into cwrap
Merge branch 'master' into cwrap
add new styles

Remove deprecated style.
Added styles for shell input/output.
Experimental Pseudocode environment
create warning environment
change to warn environment
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.
Spacing changes to eigenvalue lab.
Added description and thought questions to the Hessenberg problem in the
Givens lab.
Some more spacing fixes in the eigenvalues lab.
add several new environments

Algorithm: For typesetting pseudocode
Info: Information box
Warn: Warning box
Pseudo: listings format to mimick pseudocode environment typesetting
Merge branch 'develop' into listings-styles