Bump version to v4

Author: LogCreative

README.md

@@ -3,7 +3,7 @@
 ## PGFPlotsEdt - Faster to PGFPlot in LaTeX
 ### A PGFPlots Statistic Graph Interactive Editor.
 
-[Online website](https://logcreative.github.io/PGFPlotsEdt/index.html) | [网站(简体中文)](https://logcreative.tech/PGFPlotsEdt/index.html?lang=chs) | [Documentation](https://logcreative.github.io/PGFPlotsEdt-doc/pgfplotsedt.pdf) | [文档(简体中文)](https://logcreative.tech/PGFPlotsEdt-doc/pgfplotsedt_chs.pdf)
+[Online website](https://logcreative.github.io/PGFPlotsEdt/index.html) | [Documentation](https://logcreative.github.io/PGFPlotsEdt-doc/pgfplotsedt.pdf) | [网站(简体中文)](https://logcreative.tech/PGFPlotsEdt/index.html?lang=chs) | [文档(简体中文)](https://logcreative.tech/PGFPlotsEdt-doc/pgfplotsedt_chs.pdf)
 
 #### Introduction
 

docs/README.md

@@ -40,7 +40,7 @@ You can directly click the "Compile" button in the preview area to view the comp
 ![Compilation result](figs/compile.png)
 
 ### Data Area
-You can hover over the "+ Series" button in the data area and then click one of the data types: function, coordinate, or file. For example, after selecting the "function" type, you can see that a data series is generated, and you can enter an expression in the "function(x)" input box, such as `x/2`. When you are typing, you can see the mathematical formula $\frac{x}{2}$ is previewed automatically on the left.
+You can hover over the "+ Series" button in the data area and then click one of the data types: function, coordinate, or table. For example, after selecting the "function" type, you can see that a data series is generated, and you can enter an expression in the "function(x)" input box, such as `x/2`. When you are typing, you can see the mathematical formula $\frac{x}{2}$ is previewed automatically on the left.
 
 ![Data series](figs/function.png)
 

index.html

@@ -487,7 +487,7 @@
     <script src="js/completion.js"></script>
     <script src="lang/chs.js"></script>
     <script src="lang/en.js"></script>
-    <script>var version = "v3"</script>
+    <script>var version = "v4"</script>
     <script src="res/version.js"></script>
     <script src="js/style.js"></script>
     <script src="js/lang.js"></script>

lib/README.md

@@ -2,7 +2,7 @@
 
 This folder contains some libraries to support the website. 
 
-The license of those libraries have been checked to be compatible with GPL-3.0 License.
+The license of those libraries have been checked to be compatible with AGPL-3.0 License.
 
 ## ACE Editor