Upgrade mio and release a new version of ipc-channels #107

Job	Run time
Linux	30s
macOS	27s
Linux (force-inprocess)	31s
Windows (x86_64-pc-windows-msvc)	1m 0s
macOS (force-inprocess)	29s
Linux (memfd)	37s
Windows (i686-pc-windows-msvc)	1m 16s
macOS (async)	33s
Windows (--features force-inprocess, x86_64-pc-windows-msvc)	52s
Linux (async)	37s
Windows (--features force-inprocess, i686-pc-windows-msvc)	47s
Windows (--features windows-shared-memory-equality, x86_64-pc-windows-msvc)	1m 1s
Windows (--features windows-shared-memory-equality, i686-pc-windows-msvc)	1m 13s
Windows (--features async, x86_64-pc-windows-msvc)	1m 3s
Windows (--features async, i686-pc-windows-msvc)	1m 10s
Result	1s
	12m 7s

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