Merge pull request progit#1389 from slonopotamus/patch-1

Stop adding negative leveloffset for EPUB

Merge pull request progit#1554 from HonkingGoose/migration-asciidocto…

…r-2.0.11

Migrate to Asciidoctor 2.0.11

Merge pull request progit#1545 from stuartpb/patch-1

Merge pull request progit#1544 from ardavast/fix-typo

Fix typo in section 2.4

Merge pull request progit#1534 from Fabien-jrt/issue-1533

Fix warning about `git restore` command

Merge pull request progit#1527 from HonkingGoose/add-tip-github-CLI-tool

Add tip to point to the official GitHub CLI tool

Merge pull request progit#1523 from HonkingGoose/add-note-about-git-s…

…witch

Merge pull request progit#1511 from HonkingGoose/create-section-git-r…

…estore

Merge pull request progit#1518 from vegar/patch-1

Merge pull request progit#1516 from Morganov/small-fixes