changes while debugging for clean compilation

Further edits, adding device/ansiterm-token.sml.

sorting out and renaming logical vs device (physiical) styles and tokens

further cleanuip for clean compilation

clean-up edits

added separate definition of an ANSITermStyle structure in ansiterm-s…

Update ansiterm-device.sml

updating examples for Version 11 and ANSITermDevice

updating examples for Version 11.0

updated CHANGELOG.md for Version 11.0, revised some comments in forma…

debugging (type and signature matching errors, no testing yet)

adjusting cm files for flattened sources

Flattening the prettyprint/src directory, moving device out of src.

Updating printformat.s* with needed parameters.

Update html-style.sml

final (?) modifications of formatting.s* and doc/str-Formatting.adoc …

Update CHANGELOG.md

Added spaces format function in Formatting: FORMATTING

clean up of doc directory

edited todo.txt, clean up in doc

Update todo.txt

Create todo.txt

Edited README files, and moved device/device-notes.txt to device/READ…

edited README.md and device/device-notes.txt

Update device-notes.txt

moving and removing files (doc directory)

Cleaning up and simplifying the PrettyPrint device code and model.

editing and moviiing prettyprint (dbm) files

Further edits for JHR suggested changes. Formatting.format == Format.…

Minor editing of comments in formatting.sig