Calmwater (nee extbrain) 2.0 with file location breaking changes.

Allow moving projects to someday/maybe during weekly review or any ad…

…hoc time. THIS IS A BREAKING CHANGE; previous (<v1.4) data structures won't work. OK, they will, but use 't someday/maybe' to see old someday/maybe instead and migrate to new data structure manually.

Stable release 1.3: hello world.