Add new short names

[josefpihrt]

a: attributes b: attributes-to-skip c: content d: dry-run e: extension f: filter (MODIFY, CONFLICT) g: (TARGET, PROGRESS) h: help i: include-directory, input j: k: (ASK) l: (CONFLICT, CONTENT-ONLY) m: max-count, manual n: name o: output, options p: properties q: r: replacement s: sort, section t: highlight u: (NO-RECURSE) v: verbosity, values w: words x: (exclude-directory, CONFLICT) y: display z:

A: B: C: D: E: F: G: H: I: J: K: L: M: N: O: P: Q: R: (NO-RECURSE) S: T: U: V: W: X: Y: Z: