Upload files related to doubly connected features
Merge branch 'feature/doubly-connected' of github.com:tobydriscoll/sc-toolbox into feature/doubly-connected
In dscsolve.m, switch the nonlinear solver back to nesolve instead of
using solve.
Improvements to documentation, and creation of a tests directory for future development.
Merge branch 'release/3.0.0' into feature/doubly-connected
Updates to annulusmap to make it fit the global style.