Merge tag 'v1.0.1'

fix issue #2, #6 of png export
Merge branch 'dev'
修复滚动时，光标不跟着移动的问题
Merge remote-tracking branch 'origin/dev' into dev
优化输入文字体验
优化输入文字体验
优化
优化
删光节点内容时，没有节点变形了
Merge remote-tracking branch 'origin/dev' into dev
added node clear
Merge branch 'dev' of github.com:fex-team/kityminder into dev
remived switch layout
修改语法错误
recover icon func
update to kity 2.0
added init style
changed layout
Merge branch 'dev' into kity-2.0
kity changed