2.1.81: Merge pull request #1099 from peterwwillis/master

Update ssh-keygen with secure password encryption

2.1.80: Merge pull request #1098 from aollier/trailing_spaces

removed trailing spaces

2.1.79: Merge pull request #1096 from bzz/embedding-git-small-fixup

Remove quotes from index entries

2.1.78: Merge pull request #1094 from edenhochbaum/patch-1

Tree objects don't nec. point to trees

2.1.77: Merge pull request #999 from bzz/embedding/add-dulwich

Add Dulwich to Appendinx B: embedding

2.1.76: Merge pull request #1088 from tirkarthi/master

Fix minor typos

2.1.75: Merge pull request #1081 from jingsam/patch-1

Add hash-object to validate ruby hash function

2.1.74: Merge pull request #1083 from rpjday/adv_merging

advanced-merging.asc: correct obvious typo, "lose" -> "preserve"

2.1.73: Merge pull request #1079 from rpjday/searching

searching.asc: mention that "git grep" can search the index as well

2.1.72: Merge pull request #1078 from rpjday/signing

signing.asc: Standardize on using "$" to represent command markup