coodbms0.10.1, next steps

COODBMS release 0.10.1:

• RoleML has been extended to support account creation, login/logoff and password management.
• Passwords have been secured.
• A new exit method allows an operation to return an error result and exit the script rather than having to throw an exception.

This is just the preliminary work for access control. The next step will be to control access to various operations. For example, not everyone should be able to change another user's password. After that we can worry about read/write access.