Merge pull request #9 from kliment/master

Import latest updates from Kliment

.github/workflows/pypi-manylinux.yml

@@ -21,7 +21,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip setuptools wheel twine
     - name: Build manylinux Python wheels
-      uses: RalfG/python-wheels-manylinux-build@v0.3.1-manylinux2014_x86_64
+      uses: RalfG/python-wheels-manylinux-build@v0.3.3-manylinux2014_x86_64
       with:
         python-versions: 'cp36-cp36m cp37-cp37m cp38-cp38'
         build-requirements: 'cython'

README.i18n

@@ -12,6 +12,8 @@ and was generated using
 
   pygettext -o locale/pronterface.pot *.py printrun/*.py printrun/*/*.py
 
+on some systems you have to replace the pygettext with pygettext2 or pygettext3..
+
 followed by minor edits to the generated header.
 
 This template is the basis for all pronterface mesage catalogs.  Right
@@ -22,7 +24,7 @@ now there is only one, for German.  New ones can be created:
   mkdir -p locale/${newlang}/LC_MESSAGES
   cp locale/pronterface.pot locale/${newlanguage}/LC_MESSAGES/pronterface.po
   cd locale/${newlanguage}/LC_MESSAGES/
-  # Edit the .po file to add messages for newlang
+  # Edit the .po file to add messages for newlang (debian offers e.g.: poedit or gtranslator)
   msgfmt -o pronterface.mo pronterface.po
 
 To update a previously created message catalog from the template, use :