Add python 3.6 and docs

Author: naveen521kk

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python: [3.7, 3.8]
+        python: [3.6, 3.7, 3.8]
 
     steps:
       - name: Checkout the repository

docs/source/installation/win.rst

@@ -18,6 +18,27 @@ You can install manim very easily using chocolatey, by typing the following comm
 
 And then you can skip all the other steps and move to installing :ref:`latex-installation`.
 
+Pango Installation
+******************
+These steps would get you `libpango-1.0-0.dll` to your ``PATH`` along with other dependencies. You may probably have them before itself if you have installed `GTK <https://www.gtk.org/>`_ or any ``GTK`` based app like emacs. If you have it you can just add it to your path and skip these steps.
+
+1. Go to `Release Page
+   <https://github.com/ManimCommunity/manim-windows/releases/latest>`_ and download the one according 
+   to your PC architechture.
+
+	.. important:: Please download the ``zip`` file for architechtureof python installed.
+                  It is possible to have installed ``x86`` python on ``x64`` PC.
+
+2. Extract the zip file using File Explorer or 7z to the loaction you want to install.
+
+   .. code-block:: powershell
+      
+      7z x pango-windows-binaires-x64.zip -oC:\Pango
+
+3. Finally, add it `PATH variable
+   <https://www.computerhope.com/issues/ch000549.htm>`_.
+
+
 Cairo installation
 ******************
 

example_scenes/pangoText.py

@@ -36,3 +36,6 @@ def construct(self):
         self.play(Write(arb))
         self.wait(3)
         self.clear()
+        jap = PangoText("臂猿「黛比」帶著孩子",font="sans-serif")
+        self.play(Write(jap))
+        self.wait(3)

poetry.lock

@@ -24,7 +24,7 @@ packages = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.7"
+python = "^3.6"
 colour = "*"
 numpy = "*"
 Pillow = "*"
@@ -41,9 +41,9 @@ pycairo = [
 ]
 pangocffi = "^0.6.0"
 pangocairocffi = "^0.3.0"
-# add cairocffi
-
 cairocffi = "^1.1.0"
+dataclasses = {version = "^0.7", python = "~3.6"}
+
 [tool.poetry.dev-dependencies]
 pytest = "^6.0"