edit 0959e8cd607c 245 Add a SecretServiceKeyring backend.

# Edit history between 0959e8cd607c and 0959e8cd607c
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# Commands:
#  p, pick = use commit
#  e, edit = use commit, but stop for amending
#  f, fold = use commit, but fold into previous commit (combines N and N-1)
#  d, drop = remove commit from history
#  m, mess = edit message without changing commit content
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