[ReleaseNote] Add new features & bugfixes
[ReleaseNote] Add new features that were implemented by @cosmo0920
[ReleaseNote] Add a missing new feature which is implemented by @cosmo0920
[ReleaseNote] Fix indent
[ReleaseNote] Add log related new features
Merge pull request #846 from project-hatohol/14.12_releng/releasenote-ashie

14.12 releng/releasenote ashie
Fix a conflict
Merge pull request #848 from project-hatohol/14.12_releng/releasenote-kou

[ReleaseNote] Add log related new features
Fix a conflict