+btrfs-progs-4.15.1 (2018-02-16)
+ * build
+ * fix build on musl
+ * support asciidoctor for doc generation
+ * cleanups
+ * sync some code with kernel
+ * check: move code to own directory, split to more files
+ * tests
+ * more build tests in travis
+ * tests now pass with asan and ubsan
+ * testsuite can be exported and used separately
+
btrfs-progs-4.15 (2018-02-01)
* mkfs --rootdir reworked, does not minimize the final image but can be still
done using a new option --shrink