describing new "shallow-copy" option
implementing "shallow-copy" option for git downloads
shallow-clone and working-copy don''t making sense together
Remove dependency on Drupal core's drupal_bootstrap for Drupal 8
Improve Drupal 8 string translation service detection in dt()
#899: Improve escaping options for core-exec: allow --escape=0 to disable argument escaping. Suppress shell escaping for shell aliases in the usual case, when arguements are provided as a string.
Disable escaping for shell aliases only if the shell alias begins with "!".  In this instance, the user is expected to pre-escape the shell alias for the shell (bash).  For other shell aliases, existing behavior is maintained.
Use all caps for boolean TRUE and FALSE.
Back out 24addcdd; it is important that we set DRUSH_BACKEND in concert with the call to ob_start.
Merge pull request #966 from greg-1-anderson/drush_backend

Fix backend output to console
Supports injecting info file metatdata into YAML files.

- Fixes issue #943
Core check should be future-proof, not 8.x-specific.
Use heredoc templates for info metadata.
Merge pull request #954 from greg-1-anderson/exec-escaping

#899: Improve escaping options for core-exec
Metadata rewriting matches drupal.org.

- Uses double quotes for .info files
- Uses single quotes for .info.yml files
- Adds a yaml metadata rewrite test
Merge pull request #812 from mattacular/shallow-clone-opt

Shallow clone opt for git download targets
Merge pull request #944 from drush-ops/yaml-info-file

Supports injecting info file metatdata into YAML files.
Fix #961. Reduce bootstrap level for updatedb-batch-process.
Silent a warning when #env-vars is missing.
Merge branch 'master' of git://github.com/drush-ops/drush