Fealpy

* [Feat] Add prolongation matrix and solvers (Mesh, Solver)
* [Test] Add solver tests and examples (FEM, Solver) by Hukai0 in https://github.com/weihuayi/fealpy/pull/1534
* [Feat] Add isopara_assembly for scalar_convection_integrator, generate_local_lagrange_edges for lagrange_quadrangle_mesh by Wangwenbinmath in https://github.com/weihuayi/fealpy/pull/1536
* [Fix] The PDE module will not be installed as the __init__ file is missing.

**Full Changelog**: https://github.com/weihuayi/fealpy/compare/v3.1.0...v3.1.1

What's Changed
* update lgarange_triangle_mesh 中的一些符号 by BellaLq in https://github.com/weihuayi/fealpy/pull/1426
* 优化修改 by JinghongZhang0707 in https://github.com/weihuayi/fealpy/pull/1424
* 线弹性积分子中统一传入空间的接口 by brighthe in https://github.com/weihuayi/fealpy/pull/1425
* 线弹性积分子 by tiantian0347 in https://github.com/weihuayi/fealpy/pull/1427
* update moving mesh method by Wangwenbinmath in https://github.com/weihuayi/fealpy/pull/1428
* Fracturex更新 by tiantian0347 in https://github.com/weihuayi/fealpy/pull/1430
* 整理线弹性积分子中的组装方法 by brighthe in https://github.com/weihuayi/fealpy/pull/1433
* update moving lagrangletriangle mesh by Wangwenbinmath in https://github.com/weihuayi/fealpy/pull/1436
* update 隐式曲线区域的高阶三角形网格生成 by BellaLq in https://github.com/weihuayi/fealpy/pull/1437
* 更新热力耦合程序 by Liujiawangmath in https://github.com/weihuayi/fealpy/pull/1439
* gearx: 修复相关bug by concha-k-chen in https://github.com/weihuayi/fealpy/pull/1444
* 完善 SOPTX 程序 by brighthe in https://github.com/weihuayi/fealpy/pull/1445
* 外齿轮齿面内法向计算 by concha-k-chen in https://github.com/weihuayi/fealpy/pull/1449
* 更新 SOPTX by brighthe in https://github.com/weihuayi/fealpy/pull/1448
* halfedge by gaotingyi in https://github.com/weihuayi/fealpy/pull/1452
* 更新 SOPTX 程序 by brighthe in https://github.com/weihuayi/fealpy/pull/1453
* update svads3d and add the vem model by cbtxs in https://github.com/weihuayi/fealpy/pull/1457
* gearx：内齿圈环区域网格修正 by concha-k-chen in https://github.com/weihuayi/fealpy/pull/1454
* 完善 SOPTX by brighthe in https://github.com/weihuayi/fealpy/pull/1455
* Develop update mass_integrator isopara_assambly，para_lagrange_fe_space ctype='D' by BellaLq in https://github.com/weihuayi/fealpy/pull/1462
* update moving mesh method by Wangwenbinmath in https://github.com/weihuayi/fealpy/pull/1463
* 更新 SOPTX by brighthe in https://github.com/weihuayi/fealpy/pull/1464
* update Nedelec by july-liuzhi in https://github.com/weihuayi/fealpy/pull/1467
* 更新 SOPTX by brighthe in https://github.com/weihuayi/fealpy/pull/1472
* Gamg&网格限制、插值矩阵 by Mihe0904 in https://github.com/weihuayi/fealpy/pull/1475
* Develop soptx by brighthe in https://github.com/weihuayi/fealpy/pull/1476
* <mesh:P matrix;test:gamg> by Mihe0904 in https://github.com/weihuayi/fealpy/pull/1477
* 线弹性积分子、Dirichlet 边界条件 by brighthe in https://github.com/weihuayi/fealpy/pull/1480
* 攻坚战前的开发 by brighthe in https://github.com/weihuayi/fealpy/pull/1481
* gear: 齿轮均匀化与参数修正 by concha-k-chen in https://github.com/weihuayi/fealpy/pull/1482
* Develop:添加show_angle功能 by wangdong19 in https://github.com/weihuayi/fealpy/pull/1495
* 加入gmsh接口 by Areal-z in https://github.com/weihuayi/fealpy/pull/1496
* "Sparse Update" by Awww-nanguasu in https://github.com/weihuayi/fealpy/pull/1499
* "Update Sparse" by Awww-nanguasu in https://github.com/weihuayi/fealpy/pull/1505
* 光滑元 by gaotingyi in https://github.com/weihuayi/fealpy/pull/1506
* Add four methods:node2node,node2edge,node2cell,node2face by Areal-z in https://github.com/weihuayi/fealpy/pull/1507
* Bump nokogiri from 1.16.5 to 1.18.3 in /docs by dependabot in https://github.com/weihuayi/fealpy/pull/1515
* [Feat] lagrange_triangele_mesh、parametric_lagrange_fe_space、scalar_source_integrator 中 isopara_assembly 函数 by BellaLq in https://github.com/weihuayi/fealpy/pull/1523
* [Feat] Update SPH Algorithm support (backend, CFD module and node_mesh). by pengmiaoying in https://github.com/weihuayi/fealpy/pull/1528
* [Refactor] refactor path planning \ classify algorithms by BenHBLiu in https://github.com/weihuayi/fealpy/pull/1530

New Contributors
* Areal-z made their first contribution in https://github.com/weihuayi/fealpy/pull/1496

**Full Changelog**: https://github.com/weihuayi/fealpy/compare/v3.0.4...v3.1.0

What's Changed
* Develop by Liujiawangmath in https://github.com/weihuayi/fealpy/pull/1394
* 更新等效应力计算模块 by Liujiawangmath in https://github.com/weihuayi/fealpy/pull/1396
* 四边形网格 J 的轴的顺序，线弹性积分子考虑不同矩阵组装方式 by brighthe in https://github.com/weihuayi/fealpy/pull/1397
* update by concha-k-chen in https://github.com/weihuayi/fealpy/pull/1398
* Update CSR_Tensor by cyf9898 in https://github.com/weihuayi/fealpy/pull/1395
* inp 文件导出兼容四面体网格 by concha-k-chen in https://github.com/weihuayi/fealpy/pull/1400
* 精益项目代码 by brighthe in https://github.com/weihuayi/fealpy/pull/1399
* 修改 uniform_mesh_2d 中 Jacobian 矩阵的错误 by brighthe in https://github.com/weihuayi/fealpy/pull/1401
* Develop by WPengXiang in https://github.com/weihuayi/fealpy/pull/1402
* Jacobian 矩阵修改 by brighthe in https://github.com/weihuayi/fealpy/pull/1403
* Develop by WPengXiang in https://github.com/weihuayi/fealpy/pull/1404
* `dirichlet_bc` 中添加了传入形状的参数，`elastic_material` 中添加了 B-bar 修正的应变位移矩阵 by brighthe in https://github.com/weihuayi/fealpy/pull/1405
* 内罚有限元空间测试 by tiantian0347 in https://github.com/weihuayi/fealpy/pull/1406
* 精益项目 by brighthe in https://github.com/weihuayi/fealpy/pull/1407
* 精益项目 by brighthe in https://github.com/weihuayi/fealpy/pull/1408
* 完善 SOptx 中的程序 by brighthe in https://github.com/weihuayi/fealpy/pull/1409
* update lquad mesh by BellaLq in https://github.com/weihuayi/fealpy/pull/1410
* update lquad mesh by BellaLq in https://github.com/weihuayi/fealpy/pull/1411
* add lagrange quadrangle mesh and lagrange space on this mesh by cbtxs in https://github.com/weihuayi/fealpy/pull/1412
* 线弹性积分子 by brighthe in https://github.com/weihuayi/fealpy/pull/1413
* 内罚有限元空间测试 by tiantian0347 in https://github.com/weihuayi/fealpy/pull/1414
* 精益项目测试 by brighthe in https://github.com/weihuayi/fealpy/pull/1415
* update lmesh by BellaLq in https://github.com/weihuayi/fealpy/pull/1416
* fixed the bug in svads3 and added the function to handle the video processing by cbtxs in https://github.com/weihuayi/fealpy/pull/1421
* 优化更新 by JinghongZhang0707 in https://github.com/weihuayi/fealpy/pull/1422
* fixed a small bug in svads3d by cbtxs in https://github.com/weihuayi/fealpy/pull/1423
* update by pengmiaoying in https://github.com/weihuayi/fealpy/pull/1417
* Develop by WPengXiang in https://github.com/weihuayi/fealpy/pull/1418
* 清楚线弹性积分子中不需要的方法 by brighthe in https://github.com/weihuayi/fealpy/pull/1420
* update by pengmiaoying in https://github.com/weihuayi/fealpy/pull/1419

New Contributors
* cyf9898 made their first contribution in https://github.com/weihuayi/fealpy/pull/1395

**Full Changelog**: https://github.com/weihuayi/fealpy/compare/v3.0.2...v3.0.4

1. fix some bugs
2. add more examples

1. clear many DeprecationWarning
2. add argparse to more examples

1. 更新线性网格和Lagrange网格变量命名，保证与命名标准的一致性
1. 增加更多的测试代码