What's Changed

• Increase ob's ref count in tp_repr to avoid accidental free by @DanBarzilian in #1160
• fixed crash due to a decref of a borrowed reference in params array handling by @lostmsu in #1163
• Drop Python 2 support by @filmor in #1158
• remove remoting block for .NET standard by @koubaa in #1170
• Pybuffer by @koubaa in #1195
• Fix appveyor would only test the PyPI package by @amos402 in #1200
• Remove unnecessary CheckExceptionOccurred calls by @amos402 in #1175
• Provide more info about failuers to load CLR assemblies by @lostmsu in #1076
• Add syntax highlighting to Python code examples in README.rst [docs] by @SFM61319 in #1208
• Remove non-existent PInvoke functions by @amos402 in #1205
• Bad params object[] precedence (master) by @lostmsu in #1224
• drop 3.4 and 3.5 by @koubaa in #1227
• really remove old versions by @koubaa in #1230
• Added a test for finalization on shutdown by @lostmsu in #1206
• fix compiler warning by @koubaa in #1226
• Ensure only implementers of IEnumerable or IEnumerator are considered Iterable by @danabr in #1241
• Select correct method to invoke when keyword arguments are used by @danabr in #1242
• Wrap returned objects in interface if method return type is interface by @danabr in #1240
• Non-delegate types should not be callable by @alxnull in #1247
• Make indexers work for interface objects by @danabr in #1246
• Make it possible to use inherited indexers by @danabr in #1248
• Add soft shutdown by @amos402 in #958
• Fixed dllLocal not being initialized. by @benoithudson in #1252
• Return interface objects when iterating over interface collections by @danabr in #1257
• Make len work for ICollection<> interface objects by @danabr in #1253
• Enable Source Link and symbol package generation during build by @lostmsu in #1259
• Fixed polyfill for TypeBuilder.CreateType by @lostmsu in #1261
• fix wrongly cased Microsoft.CSHARP.Targets by @vivainio in #1271
• Intern string by @amos402 in #1254
• Use .NET Core 3.1 LTS for tests (instead of 2.0) by @lostmsu in #1279
• Python 3.9 by @filmor in #1264
• Remove deprecated implicit assembly loading by @lostmsu in #1277
• Ensure methods of Object are also available on interface objects by @danabr in #1284
• Fix kwarg func resolution by @jmlidbetter in #1136
• Allow creating new .NET arrays from Python using Array[T](dim1, dim2,…) syntax by @lostmsu in #1291
• Detect the size of wchar_t (aka Runtime.UCS) at runtime using PyUnicode_GetMax by @lostmsu in #1298
• TypeOffset class no longer depends on target Python version by @lostmsu in #1292
• [Out] parameters no longer added to return tuple by @lostmsu in #1308
• Added github actions workflow to replace travis by @lostmsu in #1307
• Convert projects to SDK style by @filmor in #1209
• Test other Operating Systems than Linux via Github Actions by @filmor in #1310
• Ensure that param-array matching works correctly by @filmor in #1304
• Remove API warnings as these will be stabilised for 3.0 by @filmor in #1315
• Replace custom platform handling by RuntimeInformation by @filmor in #1314
• Fixed CollectBasicObject test by @lostmsu in #1313
• Implement inplace building and develop by @filmor in #1317
• Drop the long-deprecated CLR.* alias by @filmor in #1319
• Fix or disable warnings in Python.Runtime by @filmor in #1318
• Fixed segfault in ClassDerived.tp_dealloc by @lostmsu in #1330
• Fixed crash in finalizer of CLR types defined in Python, that survive engine shutdown by @lostmsu in #1260
• Test for non-ASCII encoded method name by @filmor in #1329
• Fix illegal delegate usage by @BadSingleton in #1328
• PyIter: do not force dispose previous object upon moving to the next one by @lostmsu in #1331
• Incorrectly using a non-generic type with type parameters now produces a helpful Python error instead of throwing NullReferenceException by @tminka in #1326
• Call PyErr_NormalizeException for exceptions by @slide in #1265
• TestPythonEngineProperties.SetPythonPath avoids corrupting the module search path for later tests by @tminka in #1336
• ABI.Initialize gives a helpful message when the TypeOffset interop class is not configured correctly by @tminka in #1340
• Better error messages from PyObject.AsManagedObject and DelegateManager.TrueDispatch by @tminka in #1344
• Python tests can now be debugged by running them as embedded tests within NUnit by @tminka in #1341
• Operator overloads support by @christabella in #1324
• Domain reload test cases fixes by @BadSingleton in #1287
• Add more more tests for in, out and ref parameters by @BadSingleton in #1349
• Support comparison operators by @christabella in #1347
• Disable implicit conversion from PyFloat to .NET integer types by @lostmsu in #1343
• Add GetPythonThreadID and Interrupt methods in PythonEngine by @gpetrou in #1337
• Disable implicit conversion from PyFloat to uint64 by @tminka in #1362
• Disable implicit conversion from float to array index by @tminka in #1363
• Better error messages for method argument mismatch and others by @tminka in #1361
• Support ByRef arguments in event handlers by @tminka in #1364
• Build single Python.Runtime.dll for all platforms by @lostmsu in #1365
• Fix exception string by @filmor in #1360
• ParameterInfo.Name needs to be checked for null before usage by @filmor in #1375
• Monthly NuGet release previews by @lostmsu in #1381
• Sign Runtime DLL with a strong name by @gpetrou in #1382
• New loading based on clr_loader by @filmor in #1373
• Simplify PyScope by delegating ownership to PyObject instance by @lostmsu in #1367
• implement list codec by @koubaa in #1084
• Ensure interned strings can not be referenced after InternString.Shutdown by @lostmsu in #1394
• Made InterruptTest more robust by @lostmsu in #1393
• Adjust static libpython detection by @filmor in #1396
• Remove Utf8Marshaler, set PyScope base class to PyObject, added PyModule by @lostmsu in #1391
• ImportHook cleanup + PyObject.Length exception by @lostmsu in #1400
• Suggest to set Runtime.PythonDLL when embedding in .NET by @lostmsu in #1411
• Allow GIL state debugging; require GILState to be properly disposed by @lostmsu in #1397
• Try libdl.so.2 on Linux before libdl.so by @lostmsu in #1425
• PyType class, wrapper for Python types by @lostmsu in #1395
• Reworked Enum marshaling by @lostmsu in #1392
• Prevent stack overflow when an encoder is registered from Python by @lostmsu in #1429
• Do not call find_libpython during import clr as Python.Runtime can find it on its own by @lostmsu in #1440
• Fixed __cause__ on overload bind failure and array conversion by @lostmsu in #1442
• Replace magic offsets with proper offset calculation by @lostmsu in #1441
• Detect Py_TRACE_REFS at runtime and calculate object offsets accordingly by @lostmsu in #1426
• Re-enable the domain reload tests by @BadSingleton in #1404
• Dispose all temporary objects in PyCheck_Iter_PyObject_IsIterable_ThreadingLock_Test by @lostmsu in #1456
• Use PyType instances instead of raw pointers by @lostmsu in #1431
• Refactoring of tp_dealloc by @lostmsu in #1459
• Refactoring of tp_clear by @lostmsu in #1460
• Handle ProcessExit event by @lostmsu in #1458
• Improve Python <-> .NET exception integration by @lostmsu in #1134
• Add a failing test for Unicode conversion by @pkese in #1467
• Modernize import hook by @BadSingleton in #1369
• Fixed crash in ToArray when sequence explicitly denies len by @lostmsu in #1484
• Prevent crash during debugging when attempting to inspect PyObject by @lostmsu in #1483
• Fixed double call to PyType_Ready in CLR MetaType's tp_new by @lostmsu in #1486
• Create PyIter from existing PyObject by @lostmsu in #1482
• [WIP] Add ability to create module from C# by @slide in #1447
• Fixed custom decoders not working for DateTime and Decimal by @lostmsu in #1497
• Allow substituting base types for CLR types (as seen from Python) by @lostmsu in #1487
• Property descriptor made visible on the reflected class by @lostmsu in #1512
• Validate, that custom Python base types can be inherited from by @lostmsu in #1510
• Names of .NET types changed to better support generic types by @lostmsu in #1509
• Dynamic arithmetic ops raise correct Python exception on failure by @lostmsu in #1508
• Py.Import and PyModule.Import return PyObject instead of PyModule by @lostmsu in #1530
• Remove needsResolution hack by @lostmsu in #1531
• Implements buffer interface for .NET arrays of primitive types by @lostmsu in #1511
• Call tp_clear of base unmanaged type by @lostmsu in #1541
• Allow decoders affect PyObject.As<object>() by @lostmsu in #1546
• Added workaround for warning in threading module after TestInterrupt by @lostmsu in #1560
• ClassManager illegally decrefed ClassObject's refcount on shutdown by @lostmsu in #1563
• Ensure tests, that need running PythonEngine have similar SetUp and TearDown by @lostmsu in #1564
• Allow decoding instanceless exceptions by @lostmsu in #1544
• Do not clean tpHandle in ClassBase.tp_clear - it might be used in tp_dealloc by @lostmsu in #1566
• Mixins for standard collections that implement collections.abc interfaces by @lostmsu in #1543
• Allow Python to overwrite .NET methods by @lostmsu in #1545
• Simplify Dispatcher by @lostmsu in #1559
• Simplify assembly ResolveHandler, and use official assembly name parsing by @lostmsu in #1570
• Disable implicit conversions that might lose information by @lostmsu in #1568
• Minor fixup for no autoconversions PR by @lostmsu in #1574
• Fixed FileLoadException when trying clr.AddReference('/full/path.dll') by @lostmsu in #1573
• Raise BadPythonDllException instead of confusing TypeLoadException when PythonDLL was not configured properly by @lostmsu in #1577
• Cleaning up public API by @lostmsu in #1557
• PyScope/PyModule API cleanup by @lostmsu in #1569
• name and signature for .NET methods by @lostmsu in #1133
• When reflecting nested types, ensure their corresponding PyType is allocated by @lostmsu in #1579
• Safer GetAttr(name, default) by @lostmsu in #1578
• Expose PyType.Get by @lostmsu in #1581
• Allow user-created instances of PySequence and PyIterable by @lostmsu in #1580
• Changed signature of IPyObjectDecoder.CanDecode by @lostmsu in #1583
• Disabled float and bool implicit conversions by @lostmsu in #1584
• Remove a deprecated attribute in PropertyObject by @BadSingleton in #1595
• Python 3.10 by @filmor in #1591
• Make .NET objects that have __call__ method callable from Python by @lostmsu in #1589
• Fixed recursive dependency in clr module initialization by @lostmsu in #1602
• Include README.md into NuGet package by @lostmsu in #1599
• Remove unused PythonMethodAttribute by @lostmsu in #1609
• Track Runtime run number by @lostmsu in #1074
• Use .NET 6.0 LTS and C# 10 by @lostmsu in #1620
• Update NonCopyableAnalyzer to latest version with our changes upstreamed by @lostmsu in #1624
• Use new references by @lostmsu in #1603
• Fixed all warnings except explicit ones by @lostmsu in #1635
• Match generic and private methods upon runtime reload by @lostmsu in #1637
• Require newest available clr-loader by @filmor in #1643
• Fix the PyGILState_STATE type by @filmor in #1645
• Fix warning regarding undefined module on GC Offset Base by @filmor in #1646
• Removed ShutdownMode. Now always behaves like original Reload by @lostmsu in #1638
• When process is exiting, there's no need to save live .NET objects by @lostmsu in #1648
• Moved Py class into its own file by @lostmsu in #1649
• Added a regression test for calling base method from nested class by @lostmsu in #1652
• Fixed accessing partially overriden properties from Python by @lostmsu in #1650
• Reworked the way .NET objects are constructed from Python by @lostmsu in #1651
• Improved support for generic method overloading by @lostmsu in #1657
• Use Delegates to access Py_NoSiteFlag by @lostmsu in #1659
• Provide __int__ instance method on enum types to support int(Enum.Member) by @lostmsu in #1661
• Cleanup PyBuffer a bit by @lostmsu in #1662
• Support for byref parameters when overriding .NET methods from Python by @lostmsu in #1663
• Performance tests with baseline from Pypi by @filmor in #1667
• Move code to subdirectories and rename or split up by @filmor in #1665
• Added ARM64 CI action by @lostmsu in #1669
• Only run CI on pushes to master and on all pull requests by @filmor in #1670
• Temporary fix method binder for out parameters by @eirannejad in #1672
• Added todo note to ensure CLA is signed by @eirannejad in #1674
• Add tests for exception leaking. by @BadSingleton in #1679
• We can drop the import hack as we are now using the newer import mechanics by @filmor in #1686
• Update CHANGELOG.md by @nobbi1991 in #1690
• Allow dynamic PyObject conversion to IEnumerable by @lostmsu in #1697
• add GitHub URL for PyPi by @andriyor in #1708
• Make methods of PyObject inherited from its base .NET classes GIL-safe by @lostmsu in #1711
• Support for BigInteger (C#) <-> PyInt by @lostmsu in #1710
• On shutdown from Python release all slot holders by @lostmsu in #1712
• Clear weakref list when reflected object is destroyed by @lostmsu in #1758
• Clear weak reference list when an extension type is destroyed by @lostmsu in #1761
• Fix layout of NativeTypeSpec on 32 bit platforms by @lostmsu in #1765
• Implement IConvertible on PyObject by @filmor in #1762
• Ensure that codec tests are run by @filmor in #1763
• Fix decimal default parameters by @filmor in #1773
• Work around potential Mono bug, that hangs the runtime when new threads start by @lostmsu in #1779
• Miscellaneous fixes and cleanups by @filmor in #1760
• Fix enum codec by @filmor in #1621
• Disallow runtime shutdown when the Python error indicator is set by @lostmsu in #1780
• Multiple fixes related to Dictionary.Keys bug by @lostmsu in #1786
• Drop Python 3.6 support by @filmor in #1795
• Move to modern setuptools with pyproject.toml by @filmor in #1793
• Min/MaxSupportedVersion and IsSupportedVersion on PythonEngine by @filmor in #1799
• Min/MaxSupportedVersion and IsSupportedVersion on PythonEngine by @lostmsu in #1798
• Add explicit tests for vararg call by @filmor in #1805
• Fix demo scripts by @filmor in #1802
• fixed ForbidPythonThreadsAttribute being ignored in certain scenarios by @filmor in #1815
• Add test for enum int conversion by @filmor in #1811
• Implement configuring clr from environment by @filmor in #1817
• Take GIL when checking if error occurred on shutdown by @filmor in #1836
• Fix (U)IntPtr construction by @filmor in #1861
• Fix string construction by @filmor in #1862
• Fix docstring for directly constructed types by @filmor in #1865
• Fixed a leak in NewReference.Move by @lostmsu in #1873
• Add XML docs to NuGet by @lostmsu in #1878
• Mention the need for Initialize and BeginAllowThreads in the README by @lostmsu in #1897
• Disabled implicit seq to array conversion by @lostmsu in #1902
• Explicit float and int conversion for builtin types by @filmor in #1904
• Fill nb_index slot for integer types by @filmor in #1907
• Fixed use of the process handle after Process instance is garbage collected by @lostmsu in #1940
• Fixed new line character at the end of informational version by @lostmsu in #1941
• Enabled test for NoStackOverflowOnSystemType by @lostmsu in #1943
• Config-less CoreCLR and improved runtime load message by @filmor in #1942
• Implicit float conversion in function calls by @filmor in #1908
• Documentation by @filmor in #1863

New Contributors

• @DanBarzilian made their first contribution in #1160
• @SFM61319 made their first contribution in #1208
• @danabr made their first contribution in #1241
• @alxnull made their first contribution in #1247
• @BadSingleton made their first contribution in #1328
• @tminka made their first contribution in #1326
• @christabella made their first contribution in #1324
• @gpetrou made their first contribution in #1337
• @pkese made their first contribution in #1467
• @eirannejad made their first contribution in #1672
• @nobbi1991 made their first contribution in #1690
• @andriyor made their first contribution in #1708

Full Changelog: v2.5.2...v3.0.0