Update PythonQwt version to 0.12.1

Author: PierreRaybaut

doc/requirements.rst

@@ -9,12 +9,12 @@ The :mod:`plotpy` package requires the following Python modules:
       - Summary
     * - Python
       - >=3.8, <4
-      -
+      - 
     * - guidata
       - >=3.1
       - Automatic GUI generation for easy dataset editing and display
     * - PythonQwt
-      - >=0.10
+      - >=0.12.1
       - Qt plotting widgets for Python
     * - NumPy
       - >=1.17
@@ -23,10 +23,10 @@ The :mod:`plotpy` package requires the following Python modules:
       - >=1.3
       - Fundamental algorithms for scientific computing in Python
     * - Pillow
-      -
+      - 
       - Python Imaging Library (Fork)
     * - tifffile
-      -
+      - 
       - Read and write TIFF files
     * - PyQt5
       - >=5.11
@@ -42,19 +42,19 @@ Optional modules for development:
       - Version
       - Summary
     * - black
-      -
+      - 
       - The uncompromising code formatter.
     * - isort
-      -
+      - 
       - A Python utility / library to sort Python imports.
     * - pylint
-      -
+      - 
       - python code static checker
     * - Coverage
-      -
+      - 
       - Code coverage measurement for Python
     * - Cython
-      -
+      - 
       - The Cython compiler for writing C extensions in the Python language.
 
 Optional modules for building the documentation:
@@ -67,22 +67,22 @@ Optional modules for building the documentation:
       - Version
       - Summary
     * - PyQt5
-      -
+      - 
       - Python bindings for the Qt cross platform application toolkit
     * - sphinx
-      -
+      - 
       - Python documentation generator
     * - myst_parser
-      -
+      - 
       - An extended [CommonMark](https://spec.commonmark.org/) compliant parser,
     * - sphinx-copybutton
-      -
+      - 
       - Add a copy button to each of your code cells.
     * - sphinx_qt_documentation
-      -
+      - 
       - Plugin for proper resolve intersphinx references for Qt elements
     * - python-docs-theme
-      -
+      - 
       - The Sphinx theme for the CPython docs and related projects
 
 Optional modules for running test suite:
@@ -95,11 +95,11 @@ Optional modules for running test suite:
       - Version
       - Summary
     * - pytest
-      -
+      - 
       - pytest: simple powerful testing with Python
     * - pytest-cov
-      -
+      - 
       - Pytest plugin for measuring coverage.
     * - pytest-xvfb
-      -
+      - 
       - A pytest plugin to run Xvfb (or Xephyr/Xvnc) for tests.

pyproject.toml

@@ -31,7 +31,7 @@ classifiers = [
 requires-python = ">=3.8, <4"
 dependencies = [
     "guidata>=3.1",
-    "PythonQwt>=0.12",
+    "PythonQwt>=0.12.1",
     "NumPy>=1.17",
     "SciPy>=1.3",
     "Pillow",

requirements.txt

@@ -4,7 +4,7 @@ NumPy>=1.17
 Pillow
 tifffile
 PyQt5
-PythonQwt>=0.12
+PythonQwt>=0.12.1
 SciPy>=1.3
 black
 guidata>=3.1