Open PRs marked with the 5.2 milestone:

• Upgrade GraphiQL to 1.5.1 #649
• fix: url issue for path string for ui tools (playground, voyager, graphiql) #195
• Provide service provider to subscription execution #691

@sungam3r Let's review these PRs/issues and decide what else, if anything, should be in 5.2 - or revise these milestones if they will not make it in 5.2