Dependency updates, Core proto updates, and other minor things (#46)

Author: cretz

.github/workflows/ci.yml

@@ -29,6 +29,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
+      - uses: Swatinem/rust-cache@v1
       - uses: actions/setup-python@v1
         with:
           python-version: ${{ matrix.python }}
@@ -91,6 +92,7 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
+      - uses: Swatinem/rust-cache@v1
       - uses: actions/setup-python@v1
         with:
           python-version: "3.10"

README.md

@@ -583,6 +583,9 @@ To build the SDK from source for use as a dependency, the following prerequisite
 * [poetry](https://github.com/python-poetry/poetry) (e.g. `python -m pip install poetry`)
 * [poe](https://github.com/nat-n/poethepoet) (e.g. `python -m pip install poethepoet`)
 
+macOS note: If errors are encountered, it may be better to install Python and Rust as recommended from their websites
+instead of via `brew`.
+
 With the prerequisites installed, first clone the SDK repository recursively:
 
 ```bash
@@ -624,6 +627,10 @@ For example,
 [create a virtual environment](https://packaging.python.org/en/latest/tutorials/installing-packages/#creating-virtual-environments)
 somewhere and then run the following inside the virtual environment:
 
+```bash
+pip install wheel
+```
+
 ```bash
 pip install /path/to/cloned/sdk-python/dist/*.whl
 ```