The focus will be change on pressing enter in treeview or lineedit fixes #71
New docsets
Merge pull request #146 from Kapeli/master

New docsets
Merge pull request #135 from ZiDoMs/iss71

Change focus on pressing enter
add a modern icon

Signed-off-by: xiehuc <xiehuc@gmail.com>
update install path

Signed-off-by: xiehuc <xiehuc@gmail.com>
update icon add contrast

Signed-off-by: xiehuc <xiehuc@gmail.com>