parser/tests: Parse some :spell* commands with parse_rest_line
parser/printer/tests: Add :syntime parsing support
parser/printer/tests: Parse :tabmove with function that parses :resize

Slightly modified though.
parser/tests: Parse :tearoff with :popup parsing function
parser/printer/tests: Add :winsize/:winpos parsing support
parser/printers/tests: Add :wincmd parsing support