amend: prune replacement commit without sucessors
This align with the core behavior of `commit --amend`.
All user of rewrite are not responsible for creating their own marker.
6c6bb7a23bb5125bf06da73265f039dd3447dafa 0.1.0
d3f20770b86a31dba56ae7b252089e12b34702da 0.2.0
c046b083a5e0b21af69027f31cee141800cf894b 0.3.0
9bbcd274689829d9239978236e16610688978233 0.4.0
4ecbaec1d664b1e6f8ebc78292e1ced77a8e69c0 0.4.1
7ef8ab8c6feadb8a9d9e13af144a17cb23e9a38d 0.5
4a5488c01a66be4729252175cea0ea739a88a540 0.6
18a0d96ed559089edf90206c469f3f8c26681c64 0.7
18a0d96ed559089edf90206c469f3f8c26681c64 0.7
1b2757c1bd918509184f6c1d06b2329a847e31b0 0.7
b18b000363550f02f413aed008f8e306318c608c 1.0.0
ca5bb72d14aeb6e6053e3a53c064a2b7dc8010e5 1.0.1
b1bdcb4506defef0e857e2710633f7686d8034a5 1.0.2
5559e5a4b656978c592d364f242edc62369d7e84 1.0.2
c062edbcaf13135d0312fd2039deca74573ff4f0 1.1.0
22cacfce2a65ab965c6179ae862b148f4abc7d8a 1.1.0
d43e80504e55db9ad4826e860e50530103a27b0f 2.0.0
f9d305deeff3dba782e65faf4ef3fd1569995859 2.1.0
862b6b71a35836e81f090ba7229c2888e8ed2f9f 3.0.0