Add python 3.10 support and drop python 3.6 support

* Add python 3.10 support (add to test matrix)
* Drop python 3.6 support
* Use tomli instead of toml for toml support
* Update dependency range and dev dependencies

Author: daviskirk

.github/workflows/ci.yaml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
 
     steps:
     - uses: actions/checkout@v2

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## [0.11.0] - 2020-04-17
+
+### Added
+
+- Python 3.10 support (added to test suite)
+
+### Removed
+
+- Python 3.6 support
+
+### Changed
+
+- Use `tomli` instead of `toml` package in in preparation for
+  https://www.python.org/dev/peps/pep-0680/ (tomli is the basis for pythons
+  future builtin toml support)
+- Updated dependencies
+
+
 ## [0.10.0] - 2020-04-17
 
 ### Changed

climatecontrol/file_loaders.py

@@ -11,9 +11,9 @@
 from .fragment import Fragment
 
 try:
-    import toml
+    import tomli
 except ImportError:  # pragma: nocover
-    toml = None  # type: ignore
+    tomli = None  # type: ignore
 try:
     import yaml
 except ImportError:  # pragma: nocover
@@ -174,18 +174,18 @@ class TomlLoader(FileLoader):
     def from_content(cls, content: str) -> Any:
         """Load toml from string."""
         cls._check_toml()
-        return toml.loads(content)
+        return tomli.loads(content)
 
     @classmethod
     def from_path(cls, path: str):
         """Load toml from file at path."""
         cls._check_toml()
-        with open(path) as f:
-            return toml.load(f)
+        with open(path, "rb") as f:
+            return tomli.load(f)
 
     @staticmethod
     def _check_toml():
-        if toml is None:
+        if tomli is None:
             raise ImportError(
                 '"toml" package needs to be installed to parse toml files.'
             )