Change max tasks/pool default to 100. Add TODOs. PEP8 tweaks.
Change max tasks/pool default to 100. Add TODOs. PEP8 tweaks.

ajdavis/asyncio,Martiusweb/asyncio,manipopopo/asyncio,1st1/asyncio,gsb-eng/asyncio,vxgmichel/asyncio,fallen/asyncio,manipopopo/asyncio,manipopopo/asyncio,jashandeep-sohi/asyncio,ajdavis/asyncio,gsb-eng/asyncio,fallen/asyncio,haypo/trollius,gvanrossum/asyncio,gvanrossum/asyncio,gvanrossum/asyncio,jashandeep-sohi/asyncio,1st1/asyncio,vxgmichel/asyncio,Martiusweb/asyncio,gsb-eng/asyncio,1st1/asyncio,fallen/asyncio,ajdavis/asyncio,haypo/trollius,Martiusweb/asyncio,jashandeep-sohi/asyncio,vxgmichel/asyncio,haypo/trollius