Merge pull request #333 from APPFL/release-v1.8.0

release version 1.8.0

Merge pull request #325 from APPFL/zilinghan/memory-claude

Memory optimization of APPFL for FL server, FL client, gRPC communicator, and MPI communicator. This PR also releases version 1.7.0 and removes the Polaris CI/CD due to project expiration.

Merge pull request #314 from APPFL/release-v1.6.0

fix version

Merge pull request #313 from APPFL/release-v1.6.0

Release v1.6.0

Merge pull request #296 from APPFL/release-v1.5.0

release v1.5.0

Merge pull request #288 from APPFL/release-v1.4.1

release v1.4.1

Merge pull request #275 from APPFL/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Merge pull request #274 from APPFL/release-v1.3.2

prepare release

Merge pull request #273 from APPFL/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Merge pull request #261 from APPFL/release-v1.3.0

Release v1.3.0