Fix newlines and whitespace in c, a, and i edits.
Fix newlines and whitespace in c, a, and i edits.

• Trim preceeding horizontal whitespace.
• Don't chomp the final newline (preceeding .) in multi-line text. Sam leaves it, so that multi-line text always ends with a newline.
• Allow literal newlines in delimited text by escaping n.
• Simplify the logic. Among other things, no need to special-case digit escaping. It happens by default.

skiesel/T,skiesel/T,leGoof/T,leGoof/T