Fix always snaked maps

The 'snake' query parameter was not typed and was therefore treated as a string which always evaluated to True. This is now fixed, and the snake parameter is defaulted to False.

Test fix to always snaked maps

Add type hints to /map endpoint query params

Without which the snake param is taken as a string, resulting in snake
always being True. Fixed, and additionally defaulted snake to False.

Detect and report snake nature of scans

Report on the snakedness of the scan (#35)

For now simply testing whether 'Snake' appears in the scan spec.

Send periodic heartbeat over SSE endpoint

v0.2.7

Send period hearbeats to keep SSE stream alive

Return JSON object from /map, not just dataset

v0.2.6

Return {values: [[...]]} instead of just the ndarray

Fixed reshaping logic

v0.2.4

Fix daft implementation of map reshape

v0.2.3

Ensure logging propagates to root

SSE and shaped maps

v0.2.2

Add stomp listener and SSE endpoint

Return JSON object from /map, not just dataset

v0.2.5

Add ability to mount volumes; publish helm chart

Fix container entrypoint

v0.2.1

Change image entry point