Merge pull request progit#1027 from frej/update-hg-fast-export-info

Update Ch9 section about Mercurial imports to match current hg-fast-export release

Merge pull request progit#1015 from fdmarcin/master

Update installing.asc

Merge pull request progit#1011 from Rafi993/master

git cat-file -p master^{tree} in other shells

Merge branch 'explain_translation'

Merge pull request progit#998 from bzz/embedding/add-go-git

Add go-git to Appendinx B: embedding

Merge pull request progit#1006 from snehalshekatkar/change_name

Changed John to Jessica in Forked public project

Add Malay to translations

Only list contributors that were merged to master

Merge branch 'prefaces'

Merge pull request progit#978 from brotherben/master

Update information about paid GitHub plans