Improved signal list management
Fixed infinite recursion bug when adding named wires
Used Append instead of Concat
Added a Newton's method building block
More circuits working, more efficient
Reorganized tests
Fixed Solve for PartialSolve uses
Refactored NDSolve into NDIntegrate + NDSolve/NDPartialSolve
More efficient solutions to linear systems via PartialSolve
Fixed a few small bugs, better logging