2.1.163: preventing SSH port forwarding (#1296)

preventing SSH port forwarding

2.1.162: Merge pull request #1295 from max123kl/new_svg2

SVG images checked and fixed (some redesigned)

2.1.161: Merge pull request #1287 from progit/export-sketch-symbols

Add a slice to the symbols page and export it

2.1.160: Update diagram font and export SVGs (#1285)

Update diagram font and export SVGs

2.1.159

Merge pull request #1284 from katrinleinweber/1269-aggregate-core.edi…

2.1.158: Expand core.editor command list in Appendix (#1283)

Expand core.editor command list in Appendix

2.1.157: Running "git rebase -i HEAD~3" won't always rewrite commits (#1278)

Running "git rebase -i HEAD~3" won't always rewrite commits

2.1.156: Merge pull request #1274 from prosoitos/minor_fix_intro_help

Minor fix intro/help

2.1.155: Merge pull request #1273 from ChenSL86/change-order-of-the-three-states

Change the order of the three states of files.

2.1.154: Merge pull request #1272 from SiarheiBobryk/the-head-after-git-init

Specify the branch the HEAD points to on init