Release 0.4.1 with bugfixes and minor features

- ty: does a better job of preparing canned replies to short patches
- ty: is less naive about mapping local to remote branches when using them in
  templates
- ty: uses Link: and Message-Id trailers when auto-locating applied
  patches
- ty: switches -s and -d to use frienlier ranges;
  before: "-s 1 2 3 5 7 8 9", after: "-s 1-3,5,7-9"
- am: can now use the -P,--cherry-pick flag to select a subset of
  patches from a larger series
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