Add a note about string encoding (#12)

* Add a note about string encoding

* Bump python versions

Author: gentlegiantJGC

.github/workflows/python-unittests.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: ['3.9', '3.10', '3.11', '3.12']
         os: [windows-latest, macos-latest, ubuntu-latest]
     steps:
       - uses: actions/checkout@v2
@@ -20,4 +20,4 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r python/requirements.txt
       - name: Test with unittest
-        run: python -m unittest python/tests.py
+        run: python -m unittest python/tests.py

specifications/version_0/readme.md

@@ -1,6 +1,6 @@
 # Construction Format Specification (Version 0)
 
-All data is stored in big endian format.
+All data is stored in big endian format. NBT strings are encoded in Java's modified utf-8 format.
 
 The overall structure of the file is as follows: