change looking-at to looking-at-p a bit
Fix shm/close-paren, shm/close-bracket and shm/close-brace to not perform literal insetrion every time
Enhance shm/goto-where to be able to indent point after inserting where clause
Make shm-test/run clean up buffer state and support buffer-local variables

Disable shm-mode after finishing running and kill local variables
before starting test.

Add configuration of customizations for individual tests.
Add tests for shm/goto-where