Changes to the way a SigFig number is stored.

Update the Vector graph tool as the functionality recently changed.

Update the Vector graph tool as the functionality recently changed.

Added new Sample Problems

updated and added new problems.

Update subMatrix function to handle non 2D matrices.

Add use strict, use warnings to modules.

Add use strict, use warnings to modules.

Add use strict, use warnings to modules.

Update subMatrix function to handle non 2D matrices.

Update subMatrix function to handle non 2D matrices.

move compound problems to deprecated

Add new matrix methods and a test suite.

Add new matrix methods and a test suite.

Implement inserting variables in PGML answer blanks for some cases

Add use strict, use warnings to modules.

put plot components into modules.

Add additional methods and tests for numerical methods.

Add additional methods and tests for numerical methods.

Cleanup the POD

Update code to conform to perlcritic and change some documentation

Implement inserting variables in PGML answer blanks for some cases

Clean up numerical macros code and improve documentation

Clean up numerical macros code and improve documentation

Clean up numerical macros code and improve documentation