增加循环检测按钮

packages/EPPlus.5.0.3/license.md

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+# Polyform Noncommercial License 1.0.0
+
+<https://polyformproject.org/licenses/noncommercial/1.0.0>
+
+## Acceptance
+
+In order to get any license under these terms, you must agree
+to them as both strict obligations and conditions to all
+your licenses.
+
+## Copyright License
+
+The licensor grants you a copyright license for the
+software to do everything you might do with the software
+that would otherwise infringe the licensor's copyright
+in it for any permitted purpose.  However, you may
+only distribute the software according to [Distribution
+License](#distribution-license) and make changes or new works
+based on the software according to [Changes and New Works
+License](#changes-and-new-works-license).
+
+## Distribution License
+
+The licensor grants you an additional copyright license
+to distribute copies of the software.  Your license
+to distribute covers distributing the software with
+changes and new works permitted by [Changes and New Works
+License](#changes-and-new-works-license).
+
+## Notices
+
+You must ensure that anyone who gets a copy of any part of
+the software from you also gets a copy of these terms or the
+URL for them above, as well as copies of any plain-text lines
+beginning with `Required Notice:` that the licensor provided
+with the software.  For example:
+
+> Required Notice: Copyright Yoyodyne, Inc. (http://example.com)
+
+## Changes and New Works License
+
+The licensor grants you an additional copyright license to
+make changes and new works based on the software for any
+permitted purpose.
+
+## Patent License
+
+The licensor grants you a patent license for the software that
+covers patent claims the licensor can license, or becomes able
+to license, that you would infringe by using the software.
+
+## Noncommercial Purposes
+
+Any noncommercial purpose is a permitted purpose.
+
+## Personal Uses
+
+Personal use for research, experiment, and testing for
+the benefit of public knowledge, personal study, private
+entertainment, hobby projects, amateur pursuits, or religious
+observance, without any anticipated commercial application,
+is use for a permitted purpose.
+
+## Noncommercial Organizations
+
+Use by any charitable organization, educational institution,
+public research organization, public safety or health
+organization, environmental protection organization,
+or government institution is use for a permitted purpose
+regardless of the source of funding or obligations resulting
+from the funding.
+
+## Fair Use
+
+You may have "fair use" rights for the software under the
+law. These terms do not limit them.
+
+## No Other Rights
+
+These terms do not allow you to sublicense or transfer any of
+your licenses to anyone else, or prevent the licensor from
+granting licenses to anyone else.  These terms do not imply
+any other licenses.
+
+## Patent Defense
+
+If you make any written claim that the software infringes or
+contributes to infringement of any patent, your patent license
+for the software granted under these terms ends immediately. If
+your company makes such a claim, your patent license ends
+immediately for work on behalf of your company.
+
+## Violations
+
+The first time you are notified in writing that you have
+violated any of these terms, or done anything with the software
+not covered by your licenses, your licenses can nonetheless
+continue if you come into full compliance with these terms,
+and take practical steps to correct past violations, within
+32 days of receiving notice.  Otherwise, all your licenses
+end immediately.
+
+## No Liability
+
+***As far as the law allows, the software comes as is, without
+any warranty or condition, and the licensor will not be liable
+to you for any damages arising out of these terms or the use
+or nature of the software, under any kind of legal claim.***
+
+## Definitions
+
+The **licensor** is the individual or entity offering these
+terms, and the **software** is the software the licensor makes
+available under these terms.
+
+**You** refers to the individual or entity agreeing to these
+terms.
+
+**Your company** is any legal entity, sole proprietorship,
+or other kind of organization that you work for, plus all
+organizations that have control over, are under the control of,
+or are under common control with that organization.  **Control**
+means ownership of substantially all the assets of an entity,
+or the power to direct its management and policies by vote,
+contract, or otherwise.  Control can be direct or indirect.
+
+**Your licenses** are all the licenses granted to you for the
+software under these terms.
+
+**Use** means anything you do with the software requiring one
+of your licenses.

packages/EPPlus.5.0.3/readme.txt

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+# EPPlus 5
+
+## Announcement: new license model from version 5
+EPPlus has from this new major version changed license from LGPL to [Polyform Noncommercial 1.0.0](https://polyformproject.org/licenses/noncommercial/1.0.0/).
+
+With the new license EPPlus is still free to use in some cases, but will require a commercial license to be used in a commercial business.
+
+This is explained in more detail [here](https://www.epplussoftware.com/Home/LgplToPolyform).
+
+Commercial licenses, which includes support, can be purchased at (https://www.epplussoftware.com/).
+
+The source code of EPPlus has moved to a [new github repository](https://github.com/EPPlusSoftware/EPPlus)
+
+## LicenseContext parameter must be set
+With the license change EPPlus has a new parameter that needs to be configured. If the LicenseContext is not set, EPPlus will throw a LicenseException (only in debug mode).
+
+This is a simple configuration that can be set in a few alternative ways:
+
+### 1. Via code
+```csharp
+// If you are a commercial business and have
+// purchased commercial licenses use the static property
+// LicenseContext of the ExcelPackage class :
+ExcelPackage.LicenseContext = LicenseContext.Commercial;
+
+// If you use EPPlus in a noncommercial context
+// according to the Polyform Noncommercial license:
+ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
+
+using(var package = new ExcelPackage(new FileInfo("MyWorkbook.xlsx")))
+{
+
+}
+```
+### 2. Via appSettings.json
+```json
+{
+    {
+    "EPPlus": {
+        "ExcelPackage": {
+            "LicenseContext": "Commercial" //The license context used
+            }
+        }
+    }
+}
+```
+### 3. Via app/web.config
+```xml
+<appSettings>
+    <!--The license context used-->
+    <add key="EPPlus:ExcelPackage.LicenseContext" value="NonCommercial" />
+</appSettings>
+```
+### 4. Set the environment variable 'EPPlusLicenseContext'
+This might be the easiest way of configuring this. Just as above, set the variable to Commercial or NonCommercial depending on your usage.
+
+**Important!** The environment variable should be set at the user level.
+
+## New features in EPPlus 5
+EPPlus 5 comes with a set of new features, see (https://www.epplussoftware.com/Developers/Features)
+
+## Breaking Changes
+* The default behavior for the Worksheet collection base in .NET Framework has changed from 1 to 0. This is the same default behavior as in .NET core today.
+* Pictures have changed the behavior as the oneCellAnchor tag is used instead of the twoCellAnchor tag with the editAs="oneCell".
+* ...and more, see https://epplussoftware.com/docs/5.0/articles/breakingchanges.html
+
+## Improved documentation
+EPPlus 5 has new, separate sample projects for [.NET Core](https://github.com/EPPlusSoftware/EPPlus.Sample.NetCore) and [.NET Framework](https://github.com/EPPlusSoftware/EPPlus.Sample.NetFramework) respectively.
+There is also an updated [developer wiki](https://github.com/EPPlusSoftware/EPPlus/wiki). The work with improving the documentation will continue, feedback is highly appreciated!