Limit the number of unanswered typings installer requests
Limit the number of unanswered typings installer requests

If we send them all at once, we (apparently) hit a buffer limit in the
node IPC channel and both TS Server and the typings installer become
unresponsive.

kpreisser/TypeScript,synaptek/TypeScript,kpreisser/TypeScript,weswigham/TypeScript,TukekeSoft/TypeScript,microsoft/TypeScript,synaptek/TypeScript,RyanCavanaugh/TypeScript,kitsonk/TypeScript,basarat/TypeScript,donaldpipowitch/TypeScript,kitsonk/TypeScript,alexeagle/TypeScript,donaldpipowitch/TypeScript,minestarks/TypeScript,alexeagle/TypeScript,microsoft/TypeScript,synaptek/TypeScript,microsoft/TypeScript,SaschaNaz/TypeScript,nojvek/TypeScript,donaldpipowitch/TypeScript,TukekeSoft/TypeScript,Microsoft/TypeScript,weswigham/TypeScript,minestarks/TypeScript,SaschaNaz/TypeScript,Eyas/TypeScript,basarat/TypeScript,RyanCavanaugh/TypeScript,TukekeSoft/TypeScript,SaschaNaz/TypeScript,synaptek/TypeScript,nojvek/TypeScript,nojvek/TypeScript,basarat/TypeScript,basarat/TypeScript,Microsoft/TypeScript,alexeagle/TypeScript,nojvek/TypeScript,Microsoft/TypeScript,SaschaNaz/TypeScript,donaldpipowitch/TypeScript,RyanCavanaugh/TypeScript,Eyas/TypeScript,kpreisser/TypeScript,kitsonk/TypeScript,Eyas/TypeScript,minestarks/TypeScript,weswigham/TypeScript,Eyas/TypeScript