string F get; set;
Not implemented
Take the tag message from the given file. Use '-' to
read the message from the standard input.
Implies `-a` if none of `-a`, `-s`, or `-u `
is given.
string M get; set;
Not implemented
Use the given tag message (instead of prompting).
If multiple `-m` options are given, their values are
concatenated as separate paragraphs.
Implies `-a` if none of `-a`, `-s`, or `-u `
is given.
string N get; set;
Not implemented
specifies how many lines from the annotation, if any,
are printed when using -l.
The default is not to print any annotation lines.
If no number is given to `-n`, only the first line is printed.
If the tag is not annotated, the commit message is displayed instead.