Add warnings to changes that will be made in version 3.0

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,46 @@
+<!-- You can erase any parts of this template not applicable/known to your Issue. -->
+
+### Describe Your Environment
+
+[Versions from your environment]
+
+- QDarkStyle:
+- OS:
+- Python:
+
+[If used, please inform their versions]
+
+- PySide:
+- PyQt:
+- PyQtGraph:
+- QtPy:
+- QT_API:
+- PYQTGRAPH_QT_LIB:
+
+### Language
+
+[Python] or [C++]
+
+### Description / Steps to Reproduce [if necessary]
+
+[Description of the issue]
+
+1. [First Step]
+2. [Second Step]
+3. [and so on...]
+
+### Actual Result
+
+[A description, output ou image of the actual result]
+
+### Expected Results / Proposed Result
+
+[A description, output ou image of the expected/proposed result]
+
+### Relevant Code [if necessary]
+
+[A piece of code to reproduce and/or fix this issue]
+
+```
+# code here to reproduce the problem
+```

CHANGES.md

@@ -1,11 +1,15 @@
 # Changelog
 
+- 2.5.3
+  - Add future warning and pending deprecation for 3.0 version preparation #89
+  - Add ISSUE_TEMPLATE to ask for default information on issue tracker
 - 2.5.2:
   - Modularize files from example/ui to simplify edition (developers)
   - Add scripts to process files and run example more easiy (developers)
   - Better documentation (developers)
   - Add CONTRIBUTE, CODE_OF_CONDUCT, and PRODUCTION files
   - Lint markdown to standardize files
+  - Fix and add mor information in C++ example
 - 2.5.1:
   - Fix travis files, needs more improvement #74
   - Improve modules description

qdarkstyle/__init__.py

@@ -46,9 +46,9 @@ Enjoy!
 import logging
 import platform
 import os
+import warnings
 
-
-__version__ = "2.5.2"
+__version__ = "2.5.3"
 
 PYQTGRAPH_QT_LIB_VALUES = ['PyQt', 'PyQt5', 'PySide', 'PySide2']
 QT_API_VALUES = ['pyqt', 'pyqt5', 'pyside', 'pyside2']
@@ -105,6 +105,11 @@ def load_stylesheet_from_environment(is_pyqtgraph=False):
 
     :return the stylesheet string
     """
+    warnings.warn(
+        "load_stylesheet_from_environment() will be deprecated in version 3,"
+        "use load_stylesheet()",
+        PendingDeprecationWarning
+    )
     qt_api = ''
     pyqtgraph_qt_lib = ''
 
@@ -170,6 +175,11 @@ def load_stylesheet(pyside=True):
 
     :return the stylesheet string
     """
+    warnings.warn(
+        "load_stylesheet() will not receive pyside parameter in version 3. "
+        "Set QtPy environment variable to specify the Qt binding insteady.",
+        FutureWarning
+    )
     # Smart import of the rc file
     if pyside:
         import qdarkstyle.pyside_style_rc
@@ -210,6 +220,12 @@ def load_stylesheet_pyside():
 
     :return the stylesheet string
     """
+    warnings.warn(
+        "load_stylesheet_pyside() will be deprecated in version 3,"
+        "set QtPy environment variable to specify the Qt binding and "
+        "use load_stylesheet()",
+        PendingDeprecationWarning
+    )
     return load_stylesheet(pyside=True)
 
 
@@ -219,6 +235,12 @@ def load_stylesheet_pyside2():
 
     :raise NotImplementedError: Because it is not supported yet
     """
+    warnings.warn(
+        "load_stylesheet_pyside2() will be deprecated in version 3,"
+        "set QtPy environment variable to specify the Qt binding and "
+        "use load_stylesheet()",
+        PendingDeprecationWarning
+    )
     raise NotImplementedError("PySide 2 is not supported yet.")
 
 
@@ -228,6 +250,12 @@ def load_stylesheet_pyqt():
 
     :return the stylesheet string
     """
+    warnings.warn(
+        "load_stylesheet_pyqt() will be deprecated in version 3,"
+        "set QtPy environment variable to specify the Qt binding and "
+        "use load_stylesheet()",
+        PendingDeprecationWarning
+    )
     return load_stylesheet(pyside=False)
 
 
@@ -239,6 +267,12 @@ def load_stylesheet_pyqt5():
 
     :return the stylesheet string
     """
+    warnings.warn(
+        "load_stylesheet_pyqt5() will be deprecated in version 3,"
+        "set QtPy environment variable to specify the Qt binding and "
+        "use load_stylesheet()",
+        PendingDeprecationWarning
+    )
     # Smart import of the rc file
     import qdarkstyle.pyqt5_style_rc