fix: fix pyrate compatibility and deprecate Python 3.8/3.9 (#89)

The import statement was changed to remove `RequestRate`, but line 35
still referenced it, causing a runtime `NameError`. Additionally, Python
3.8 and 3.9 support has been deprecated, with the minimum Python version
now set to 3.10.

**Changes:**
- Added `Rate` to imports from `pyrate_limiter` 
- Updated arxiv adapter to use `Rate` instead of `RequestRate`
- Removed Python 3.8 and 3.9 from package classifiers in
`pyproject.toml`
- Updated `requires-python` to `>=3.10` in `pyproject.toml`
- Updated GitHub Actions test workflow to test with Python 3.10 and 3.13
- Updated README.md to reflect minimum Python version requirement of
3.10

```python
# Before (broken)
from pyrate_limiter import Duration, Limiter
adapter_arxiv = LimiterAdapter(
    limiter=Limiter(RequestRate(1, Duration.SECOND * 3)), ...  # NameError
)

# After
from pyrate_limiter import Duration, Limiter, Rate
adapter_arxiv = LimiterAdapter(
    limiter=Limiter(Rate(1, Duration.SECOND * 3)), ...
)
```

<!-- START COPILOT CODING AGENT TIPS -->
---

💡 You can make Copilot smarter by setting up custom instructions,
customizing its development environment and configuring Model Context
Protocol (MCP) servers. Learn more [Copilot coding agent
tips](https://gh.io/copilot-coding-agent-tips) in the docs.

---------

Co-authored-by: Jinzhe Zeng <jinzhe.zeng@ustc.edu.cn>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: njzjz <9496702+njzjz@users.noreply.github.com>

Author: 3 people

.github/workflows/test.yaml

@@ -10,7 +10,7 @@ jobs:
   test:
     strategy:
       matrix:
-        python: ["3.8", "3.13"]
+        python: ["3.10", "3.13"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6

README.md

@@ -18,7 +18,7 @@ Visit [wenxian.njzjz.win](https://wenxian.njzjz.win) to use wenxian in the brows
 
 ### Command line interface
 
-`wenxian` requires Python 3.8. It's suggested to install [`uv`](https://github.com/astral-sh/uv) first:
+`wenxian` requires Python 3.10. It's suggested to install [`uv`](https://github.com/astral-sh/uv) first:
 
 ```sh
 pip install uv

pyproject.toml

@@ -11,8 +11,6 @@ authors = [
 ]
 license = { file = "LICENSE" }
 classifiers = [
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -29,7 +27,7 @@ dependencies = [
     "requests-ratelimiter",
     "pyrate-limiter",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 readme = "README.md"
 keywords = ["bib"]
 

wenxian/feeder/session.py

@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from pyrate_limiter import Duration, Limiter, RequestRate
+from pyrate_limiter import Duration, Limiter, Rate
 from requests import Session
 from requests.adapters import HTTPAdapter, Retry
 from requests_ratelimiter import LimiterAdapter
@@ -32,7 +32,7 @@
 SESSION.mount("https://api.crossref.org/", adapter_crossref)
 # Arxiv: https://info.arxiv.org/help/api/tou.html
 adapter_arxiv = LimiterAdapter(
-    limiter=Limiter(RequestRate(1, Duration.SECOND * 3)), burst=1, max_retries=retries
+    limiter=Limiter(Rate(1, Duration.SECOND * 3)), burst=1, max_retries=retries
 )
 SESSION.mount("https://export.arxiv.org/api", adapter_arxiv)
 # https://www.semanticscholar.org/product/api