Range expansion needs a bound that steps the last existing part of a
version, add that.
next() increments the last part, whatever it is: next of '1' is '2', of
'1.0' is '1.1', of '1.2.3' is '1.2.4', of '1.2.3-45' is '1.2.3-46'.
Tests written by AI.
Signed-off-by: Jan Lindemann <jan@janware.com>
Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.85.1
Jan Lindemann
83b5151f22