V.1.8

Latest YMLBook version
Revert "V.1.8"

This reverts commit 2ab65b948148ea6ac063f20dc566e8fe0886d1e5.
Revert "Revert "V.1.8""

This reverts commit ac7860e4e5b8fae282e28767192917bc0286446f.
test
Revert "test"

This reverts commit 0cc4010c16bac9dd9d2333604f85b650f9567630.
Revert "V.1.8"

This reverts commit 2ab65b948148ea6ac063f20dc566e8fe0886d1e5.