Merge pull request #334 from sebastiaandegeus/master

dbpass as an optional argument for wp core config command
delete submodules
add composer.lock
travis: no more submodules to initialize
install and use Composer in utils/dev-build
remove loading from submodules
update make-phar.php to use vendor dir
Merge pull request #336 from wp-cli/no-submodules

Replace git submodules with Composer dependencies
show error message when vendor directory is missing

see #336
leave minimum stability to stable
remove unnecessary loading of PHPUnit/Autoload.php
don't check if the cache directory exists

`core download` takes care of it
Merge pull request #341 from wp-cli/fix-composer

require_once(Symfony/Component/Yaml/autoloader.php): failed to open stream
make update-phar generate a checksum

[ci skip]
install composer dependencies in local-build too

see #342
make local-build embedable into .bashrc again

see #342
Merge pull request #340 from wp-cli/phar-checksum

Publish checksum for Phar archive
set default value for query_var to true, same as the codex
fixed escaped quotes that caused wrong urls on output