fix formatting and update examples
Merge pull request #881 from wp-cli/list-filter

List only active plugins
make merge_config() work for runtime args too
move YAML loading to Configurator
runtime config can be set after file config
keep unknown config values in memory
pass config values to commands via $assoc_args
add test for command-specific configs
merge command config values after validating positional parameters
test that CLI args overwrite config values
Merge pull request #883 from wp-cli/extra-config

Pass values from config files to subcommands via $assoc_args
switch to develop.svn and only download the test utilities
use $ioption for all sed invocations
refactor install-wp-tests.sh into 3 functions
fix DB name replacement
install wp-mysqli, to avoid deprecation warnings, which cause PHPUnit to fail
Merge pull request #679 from wp-cli/tests-suite

Decide what to do about develop.svn.wordpress.org
remove obsolete `wp core init-tests` command
Merge pull request #885 from wp-cli/no-init-tests

Remove `wp core init-tests` command
make WP_TESTS_DIR optional, by defaulting to a temporary path