changes. There still remains some bugs to be squashed, a feature or two to
add, and some polishing to be done. However, it seems to be in a workable
state.
interpreter struct so that custom cbuf data can be reset after an error.
This fixes a bug where GIB would think it was still waiting for a return
value after an error occurred in an embedded command.
to accommodate it. Added the strict flag to cbufs, which causes an error
to be generated when a command is not found instead of just warning the
user. GIB buffers have the strict flag set by default.
