Update API specification

lib/www/server/spec/openapi.yaml

@@ -216,6 +216,26 @@ components:
                 pattern: "(([^\\s,;:]+)(\\s*[,;:\\s]\\s*)?)+"
             example: "line,point,tstamp"
 
+        QueryMime:
+            name: mime
+            description: |
+                Ask for the representation of the requested resource to be provided in the indicated MIME type. Overrides the [`Accept`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept) request header values (if any).
+
+                Note that the server is not obliged to honour the requested type and a default (usually `application/json`) might be provided instead. Always check the response's [`Content-Type`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Type) header.
+            in: query
+            schema:
+                type: string
+
+        QueryFilename:
+            name: filename
+            description: |
+                Cause the [`Content-Disposition`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition) response header to be set and suggest a file name to download as.
+
+                Note that the [`Content-Type`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Type) response header is not affected by this parameter.
+            in: query
+            schema:
+                type: string
+
         CSVDelimiter:
             description: Delimiter value to use in CSV requests or responses.
             name: delimiter
@@ -1394,6 +1414,8 @@ paths:
                 - $ref: "#/components/parameters/CSVDelimiter"
                 - $ref: "#/components/parameters/CSVFields"
                 - $ref: "#/components/parameters/CSVHeader"
+                - $ref: "#/components/parameters/QueryMime"
+                - $ref: "#/components/parameters/QueryFilename"
             responses:
                 "200":
                     description: List of project events