Add data caching based on IndexedDB

Ref. #22

Author: treiher

.github/workflows/tests.yml

@@ -135,7 +135,9 @@ jobs:
         uses: taiki-e/install-action@v2
         with:
           tool: cargo-llvm-cov@${{ env.CARGO_LLVM_COV_VERSION }},nextest@${{ env.NEXTEST_VERSION }}
-      - name: Check
+      - name: Install wasm-pack
+        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+      - name: Test
         run: |
           make test_frontend
 

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Exercise catalog
 - Log view
+- Limited offline mode: Access to cached data when offline
 
 ### Changed