0.3.4

• 支持==高亮的渲染 #62
• 增加了隐藏长标题为省略号的选项 #66
• 改变了一些样式设置以适应不同的主题 #64

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• Support == rendering #62
• Add setting to config to collapse long heading to ellipsis #66
• Change some style setting to fit different themes #64

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