Merging baseline 1 changes into the major branch

A version tree of an element has three branches, from left to right, main, r1_fix, and major. The main branch has versions 0 through 5. The r1_fix branch starts at version 0 off main and has versions 0 through 2. The major branch also starts at version 0 off main and has versions 0 through 6. On the main branch, version 0 has label R1.0, version 3 ends a merge arrow from version 2 on the r1_fix branch, and version 4 has label R2_BL1 and starts a merge arrow to version 6 on the major branch. On the r1_fix branch, version 2 has label (R1.0.1) and starts a merge arrow to version 3 on the main branch. On the major branch, version 3 has the annotation Development when BL1 is complete, version 5 has the annotation Development freeze, and version 6 ends a merge arrow from version 4 on the main branch.