translate

在设置重复过滤阈值的时候输入空字符串会抛出错误并崩溃

错误信息
==============System Info================
System:Microsoft Windows NT 6.2.9200.0
CurrentTime:2020/12/1 23:40
dotNetVersion:4.0.30319.42000
MisakaTranslatorVersion:2.7.0.0
==============Exception Info================
ExceptionType:UI Thread
ExceptionSource:mscorlib
ExceptionMessage:输入字符串的格式不正确。
ExceptionStackTrace: 在 System.Number.StringToNumber(String

describe the bug描述问题

describe the problem you encountered 请在此详细描述你遇到的问题，例如问题的表现形式，对你造成了那些影响等

The bing.com search page settings: Country/Region
changes to: China
automatically the first time the translation source is changed to:
Tencent Translate

from the top left button in the EdgeTranslate right panel.
The top left button showed the default source: Google

Any searches from t

Describe the bug
Popup with translation in some cases can be broken by the styles of the page where it is open.

To Reproduce

1. Go to example.com
2. Select some text to translate
3. See a popup with extra padding like on the screenshots below

Expected behavior
A popup without extra paddings.

Screenshots
![Screenshot 2021-02-28 at 20 18 41](https

There have been many recent changes to deep-translator, including a recent update to introduce new CLI functionality. These changes need to be added to the documentation.

Good first issue: The documentation is mostly accurate, there is just some missing coverage of new features, so this should be simple enough for someone who either knows restructuredText or wants to learn it.