We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Bug: broken import from augmentations
Hi I installed the latest pip version of lhotse and I am getting an import error when using the lhotse CLI:

Setup:
```
python3.7.0 
lhotse==0.2.0
```

To reproduce, try either from the following lines:
```
lhotse convert-kaldi <data-dir> 16000 <other-data-dir>
python -c "from lhotse.augmentation import available_wav_augmentations"
```

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `lhotse/augmentation/__init__.py`
Content:
```
1 from .common import AugmentFn
2 from .torchaudio import *
3 from .wavaugment import WavAugmenter, is_wav_augment_available
4
```

Path: `setup.py`
Content:
```
1 # coding=utf-8
2 import os
3 from pathlib import Path
4 
5 from setuptools import find_packages, setup
6 
7 project_root = Path(__file__).parent
8 
9 install_requires = (project_root / 'requirements.txt').read_text().splitlines()
10 docs_require = (project_root / 'docs' / 'requirements.txt').read_text().splitlines()
11 tests_require = ['pytest==5.4.3', 'flake8==3.8.3', 'coverage==5.1', 'hypothesis==5.41.2']
12 dev_requires = docs_require + tests_require + ['jupyterlab', 'matplotlib', 'isort']
13 
14 if os.environ.get('READTHEDOCS', False):
15     # When building documentation, omit torchaudio installation and mock it instead.
16     # This works around the inability to install libsoundfile1 in read-the-docs env,
17     # which caused the documentation builds to silently crash.
18     install_requires = [req for req in install_requires if not req.startswith('torchaudio')]
19 
20 setup(
21     name='lhotse',
22     version='0.2.0',
23     python_requires='>=3.7.0',
24     description='Data preparation for speech processing models training.',
25     author='The Lhotse Development Team',
26     author_email="pzelasko@jhu.edu",
27     long_description=(project_root / 'README.md').read_text(),
28     long_description_content_type="text/markdown",
29     license='Apache-2.0 License',
30     packages=find_packages(),
31     # The line below makes every script in the list an executable that's inserted in PATH
32     # as long as the virtualenv/conda env is active; they can be used like any other shell program
33     scripts=['lhotse/bin/lhotse'],
34     install_requires=install_requires,
35     extras_require={
36         'docs': docs_require,
37         'tests': tests_require,
38         'dev': docs_require + tests_require
39     },
40     classifiers=[
41         "Development Status :: 3 - Alpha",
42         "Programming Language :: Python :: 3.7",
43         "Programming Language :: Python :: 3.8",
44         "Intended Audience :: Science/Research",
45         "Operating System :: POSIX :: Linux",
46         "Operating System :: MacOS :: MacOS X",
47         "License :: OSI Approved :: Apache Software License",
48         "Topic :: Multimedia :: Sound/Audio :: Speech",
49         "Topic :: Scientific/Engineering :: Artificial Intelligence",
50         "Topic :: Software Development :: Libraries :: Python Modules",
51         "Typing :: Typed"
52     ],
53 )
54
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/lhotse/augmentation/__init__.py b/lhotse/augmentation/__init__.py
--- a/lhotse/augmentation/__init__.py
+++ b/lhotse/augmentation/__init__.py
@@ -1,3 +1,3 @@
 from .common import AugmentFn
 from .torchaudio import *
-from .wavaugment import WavAugmenter, is_wav_augment_available
+from .wavaugment import WavAugmenter, is_wav_augment_available, available_wav_augmentations
diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
 
 setup(
     name='lhotse',
-    version='0.2.0',
+    version='0.2.1',
     python_requires='>=3.7.0',
     description='Data preparation for speech processing models training.',
     author='The Lhotse Development Team',

{"golden_diff": "diff --git a/lhotse/augmentation/__init__.py b/lhotse/augmentation/__init__.py\n--- a/lhotse/augmentation/__init__.py\n+++ b/lhotse/augmentation/__init__.py\n@@ -1,3 +1,3 @@\n from .common import AugmentFn\n from .torchaudio import *\n-from .wavaugment import WavAugmenter, is_wav_augment_available\n+from .wavaugment import WavAugmenter, is_wav_augment_available, available_wav_augmentations\ndiff --git a/setup.py b/setup.py\n--- a/setup.py\n+++ b/setup.py\n@@ -19,7 +19,7 @@\n \n setup(\n     name='lhotse',\n-    version='0.2.0',\n+    version='0.2.1',\n     python_requires='>=3.7.0',\n     description='Data preparation for speech processing models training.',\n     author='The Lhotse Development Team',\n", "issue": "Bug: broken import from augmentations\nHi I installed the latest pip version of lhotse and I am getting an import error when using the lhotse CLI:\r\n\r\nSetup:\r\n```\r\npython3.7.0 \r\nlhotse==0.2.0\r\n```\r\n\r\nTo reproduce, try either from the following lines:\r\n```\r\nlhotse convert-kaldi <data-dir> 16000 <other-data-dir>\r\npython -c \"from lhotse.augmentation import available_wav_augmentations\"\r\n```\n", "before_files": [{"content": "from .common import AugmentFn\nfrom .torchaudio import *\nfrom .wavaugment import WavAugmenter, is_wav_augment_available\n", "path": "lhotse/augmentation/__init__.py"}, {"content": "# coding=utf-8\nimport os\nfrom pathlib import Path\n\nfrom setuptools import find_packages, setup\n\nproject_root = Path(__file__).parent\n\ninstall_requires = (project_root / 'requirements.txt').read_text().splitlines()\ndocs_require = (project_root / 'docs' / 'requirements.txt').read_text().splitlines()\ntests_require = ['pytest==5.4.3', 'flake8==3.8.3', 'coverage==5.1', 'hypothesis==5.41.2']\ndev_requires = docs_require + tests_require + ['jupyterlab', 'matplotlib', 'isort']\n\nif os.environ.get('READTHEDOCS', False):\n    # When building documentation, omit torchaudio installation and mock it instead.\n    # This works around the inability to install libsoundfile1 in read-the-docs env,\n    # which caused the documentation builds to silently crash.\n    install_requires = [req for req in install_requires if not req.startswith('torchaudio')]\n\nsetup(\n    name='lhotse',\n    version='0.2.0',\n    python_requires='>=3.7.0',\n    description='Data preparation for speech processing models training.',\n    author='The Lhotse Development Team',\n    author_email=\"pzelasko@jhu.edu\",\n    long_description=(project_root / 'README.md').read_text(),\n    long_description_content_type=\"text/markdown\",\n    license='Apache-2.0 License',\n    packages=find_packages(),\n    # The line below makes every script in the list an executable that's inserted in PATH\n    # as long as the virtualenv/conda env is active; they can be used like any other shell program\n    scripts=['lhotse/bin/lhotse'],\n    install_requires=install_requires,\n    extras_require={\n        'docs': docs_require,\n        'tests': tests_require,\n        'dev': docs_require + tests_require\n    },\n    classifiers=[\n        \"Development Status :: 3 - Alpha\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Intended Audience :: Science/Research\",\n        \"Operating System :: POSIX :: Linux\",\n        \"Operating System :: MacOS :: MacOS X\",\n        \"License :: OSI Approved :: Apache Software License\",\n        \"Topic :: Multimedia :: Sound/Audio :: Speech\",\n        \"Topic :: Scientific/Engineering :: Artificial Intelligence\",\n        \"Topic :: Software Development :: Libraries :: Python Modules\",\n        \"Typing :: Typed\"\n    ],\n)\n", "path": "setup.py"}], "after_files": [{"content": "from .common import AugmentFn\nfrom .torchaudio import *\nfrom .wavaugment import WavAugmenter, is_wav_augment_available, available_wav_augmentations\n", "path": "lhotse/augmentation/__init__.py"}, {"content": "# coding=utf-8\nimport os\nfrom pathlib import Path\n\nfrom setuptools import find_packages, setup\n\nproject_root = Path(__file__).parent\n\ninstall_requires = (project_root / 'requirements.txt').read_text().splitlines()\ndocs_require = (project_root / 'docs' / 'requirements.txt').read_text().splitlines()\ntests_require = ['pytest==5.4.3', 'flake8==3.8.3', 'coverage==5.1', 'hypothesis==5.41.2']\ndev_requires = docs_require + tests_require + ['jupyterlab', 'matplotlib', 'isort']\n\nif os.environ.get('READTHEDOCS', False):\n    # When building documentation, omit torchaudio installation and mock it instead.\n    # This works around the inability to install libsoundfile1 in read-the-docs env,\n    # which caused the documentation builds to silently crash.\n    install_requires = [req for req in install_requires if not req.startswith('torchaudio')]\n\nsetup(\n    name='lhotse',\n    version='0.2.1',\n    python_requires='>=3.7.0',\n    description='Data preparation for speech processing models training.',\n    author='The Lhotse Development Team',\n    author_email=\"pzelasko@jhu.edu\",\n    long_description=(project_root / 'README.md').read_text(),\n    long_description_content_type=\"text/markdown\",\n    license='Apache-2.0 License',\n    packages=find_packages(),\n    # The line below makes every script in the list an executable that's inserted in PATH\n    # as long as the virtualenv/conda env is active; they can be used like any other shell program\n    scripts=['lhotse/bin/lhotse'],\n    install_requires=install_requires,\n    extras_require={\n        'docs': docs_require,\n        'tests': tests_require,\n        'dev': docs_require + tests_require\n    },\n    classifiers=[\n        \"Development Status :: 3 - Alpha\",\n        \"Programming Language :: Python :: 3.7\",\n        \"Programming Language :: Python :: 3.8\",\n        \"Intended Audience :: Science/Research\",\n        \"Operating System :: POSIX :: Linux\",\n        \"Operating System :: MacOS :: MacOS X\",\n        \"License :: OSI Approved :: Apache Software License\",\n        \"Topic :: Multimedia :: Sound/Audio :: Speech\",\n        \"Topic :: Scientific/Engineering :: Artificial Intelligence\",\n        \"Topic :: Software Development :: Libraries :: Python Modules\",\n        \"Typing :: Typed\"\n    ],\n)\n", "path": "setup.py"}]}