Updates logic submodule. Refs #32.
Updates nimcache paths to compile project. Refs #32.

Recent compiler changes filename scheme, see
https://github.com/Araq/Nimrod/issues/852.
Alternates weight cell backgrounds. Refs #32.
Shadows same date strings with lighter color. Refs #32.
Scans external logic submodule for ctags. Refs #32.
Refreshes visible rows with modifications. Refs #32.
Documents task in changes log. Refs #32.
Merge branch 'feature/t32_show_alternate_background_rows'