test_configure_output_type
add output_type option
add test_emit_json, and test_emit_hash
use Proc
review: add a nonjsonable test in test_emit_json
Merge pull request #153 from sonots/stdout_output_type

Add `output_type` option to out_stdout
Validate buffer_patn parameter in buf_file to check buffer_path is unique or not
Forgot to clear @buffer_paths
Merge pull request #155 from fluent/validate-file-buffer-path

Validate buffer_path parameter in buf_file to check buffer_path is uniqu...
Fixed warning of test of in_object_space by the reinitialized constant

Signed-off-by: Tsuyoshi Ozawa <ozawa.tsuyoshi@gmail.com>
Merge pull request #162 from oza/fix-in_object_space-test-warning

Fixed warning of test of in_object_space by the reinitialized constant
Modify .travis.yml to test v11 branch
Merge pull request #172 from makimoto/fix-travis-yml-for-v11

Modify .travis.yml to test v11 branch
backport config dsl from v11
missed to fix test
fix to return self after instance_eval
Merge pull request #177 from sabottenda/fix_eval_dslparser

fix to return self after instance_eval
Goodbye incomprehensible code indent! Yay!!
Add format option to in_exec plugin
Improve in_exec test