remove a legacy plugin load method
Merge pull request #321 from kiyoto/remove-load_gem_plugins

remove a legacy plugin load method
add Fluent::Config::Section#inspect to show data content
revert dummy log device commit
Use DummyLogDevice
log level should not be changed for backward compatibility
add delegation out, and out=
Merge pull request #322 from sonots/revert_dummy_log_device_commit

revert dummy log device commit
v0.10.48
Fix fluent-debug raises undefined method 'usage'
Merge pull request #328 from uu59/fix_debug_usage

Fix fluent-debug raises undefined method 'usage'
Fix broken include in V1 configuration. fix #325
Fix include order problem and spec codes
Merge pull request #329 from fluent/fix-v1-config-include

Fix broken include in V1 configuration. fix #325
Add format option to in_http. fixes #302
Merge pull request #333 from fluent/add-format-to-in_http

Add format option to in_http. fixes #302