add CHANGELOG
store pid file by project file path
skip running if project already running by another process.
update CHANGELOG
Merge branch 'feature/skip_if_another_process_running' into develop
colorized logging console output
log for FileUtils
project add log message
project base logger support
capture log messages on rspec
updated changelog
fix utils use root logger bug
Merge branch 'feature/friendly_log_messages' into develop
support parallel running by threads.
posix-spawn style close
catch project perform exception
Merge branch 'feature/continue_if_project_exception' into develop