New upstream version 20201218

readme.md

+**Karla**. 
+
+Karla is an outstanding grotesque sans serif typeface family created by Jonathan Pinhorn ([@jonpinhorn_type](http://twitter.com/jonpinhorn_type), a graduate of the MA in Typeface Design at the University of Reading), released through Google Webfonts in 2012.
+
+## Building instructions
+
+See the README.md file in sources folder.
+
+## Changes:
+
+See the FONTLOG.txt for details.

requirements.txt

+fontmake
+fontbakery
+gftools
+afdko
+statmake
+brotli
\ No newline at end of file

sources/README.md

+## Building the Fonts
+
+The fonts are built using fontmake and post-processed with gftools scripts. The tools are all Python based. 
+
+First, is necessary to create a python3 virtual environment in the folder and then install the tools into it. This would only be needed once.
+
+```
+# Create a new virtualenv
+python3 -m venv venv
+# Activate env
+source venv/bin/activate
+# Install dependencies
+pip install -r requirements.txt
+```
+
+
+From the Sources folder run the build script in the terminal:
+
+```
+# Activate env
+source venv/bin/activate
+cd Sources
+sh build.sh
+```
\ No newline at end of file