Merge branch 'aiohttp_server'

Makefile.local

java/server/pom.xml

...erver/src/main/java/org/softwareheritage/graph/Entry.java

.../java/org/softwareheritage/graph/algo/NodeIdConsumer.java

...java/org/softwareheritage/graph/algo/NodeIdsConsumer.java

...in/java/org/softwareheritage/graph/algo/PathConsumer.java

.../main/java/org/softwareheritage/graph/algo/Traversal.java

.../src/main/java/org/softwareheritage/graph/backend/Pp.java

...src/main/java/org/softwareheritage/graph/t/WriteLong.java

...rc/main/java/org/softwareheritage/graph/t/aiohttp_rest.py

...erver/src/main/java/org/softwareheritage/graph/t/data.bin

...r/src/main/java/org/softwareheritage/graph/t/read_long.py

...r/src/test/java/org/softwareheritage/graph/GraphTest.java

requirements.txt

setup.py

swh/graph/cli.py

swh/graph/client.py

swh/graph/server/__init__.py

swh/graph/server/app.py

swh/graph/server/backend.py