Implement form selection via xpath, css, names and ids
Improve failure error message for assert_raises
More philosophy
Tweaking assert_raise again
Fix test name
Started on FormProxy, for selecting a single form
Note that nonexistent forms need to be tested
Add tests for trying to find missing forms, fix a bug in the process
Reused port number, oops
Add more tests for finding missing forms, catch another bug
Fix test class name
Implement remaining methods on FormProxy