[OnePiece5] error_get_last is available in 5.2 or later of PHP version.
[OnePiece5] debug_backtrace args, version 5.2.5 later
Merge branch 'staging' of https://github.com/TomoakiNagahara/op-core into staging
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'

Conflicts:
	OnePiece5.class.php
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
[OnePiece5] Fix: stash is merge
Merge branch 'develop'
Merge branch 'master' of https://github.com/TomoakiNagahara/op-core into develop
Merge branch 'develop' of https://github.com/TomoakiNagahara/op-core into develop
Merge branch 'develop' of https://github.com/TomoakiNagahara/op-core into develop
[merge]
[Merge]
[Merge]
[merge]
[OnePiece5] Fix: $this to self