Merge pull request #15 from fex-team/dev-1.4.0

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Merge pull request #16 from fex-team/dev-1.4.0

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Merge pull request #17 from fex-team/dev-1.4.0

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Merge pull request #18 from fex-team/dev-1.4.0

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Merge branch 'dev-1.4.0' of https://github.com/worry127722/ueditor into dev-1.4.0
Merge pull request #164 from worry127722/dev-1.4.0

Dev 1.4.0