bitfields are now incorporated

[WalterBright]

See dlang/dmd#21625

[dlang-bot]

Thanks for your pull request, @WalterBright!

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[ntrel]

dmd 2.111 still requires the -preview switch:

onlineapp.d(4): Error: variable `onlineapp.S.__anonBitField1` use -preview=bitfields for bitfield support
    int :2, c:3;
         ^
onlineapp.d(4): Error: variable `onlineapp.S.c` use -preview=bitfields for bitfield support
    int :2, c:3;
              ^

[thewilsonator]

@ntrel this require the linked PR in dmd to be merged first

[ntrel]

@thewilsonator Well it needs a new release (and run.dlang.io to be updated with it).