#379 Introduced Exec implementation of Instance
Merge pull request #383 from nyavro/issue379

#383: pull request #379 Introduced Exec implementation of Instance
0.3
#379 Introduced ProvisionedShell
snapshot
0.3
snapshot again
Merge branch 'master' of github.com:rultor/rultor
Merge pull request #384 from nyavro/issue382

#384: pull request #379 Introduced ProvisionedShell
#209 ssh test
#209 command factory and command as classes
Merge pull request #386 from krzyk/209

#386: pull request #209 ssh test
#387 in test reproduced/requested
#387 Alter implemented in Repo
#387 documented
Merge pull request #388 from yegor256/387

#388: pull request #387 altered texts implemented