revert #190 workarounds - reenable projects

[MartinNowak]

#190 should be fixed by #197

[dlang-bot]

Thanks for your pull request, @MartinNowak!

[wilzbach]

Re-enabled ggplotd too + temporarily removed the failing projects:

• libdparse (-> Fix #193 - reenable libdparse #205)
• vibe.d:vibe-core + diet-ng + dub (depends on vibe-d 0.8.4?)

The vibe-d error is:

../../.dub/packages/vibe-d-0.8.3-alpha.3/vibe-d/stream/vibe/stream/wrapper.d(179,22): Error: no property `connected` for type `const(InterfaceProxy!(ConnectionStream))`
../../.dub/packages/vibe-d-0.8.3-alpha.3/vibe-d/stream/vibe/stream/wrapper.d(187,19): Error: no property `connected` for type `InterfaceProxy!(ConnectionStream)`
../../.dub/packages/vibe-d-0.8.3-alpha.3/vibe-d/stream/vibe/stream/wrapper.d(188,15): Error: no property `close` for type `InterfaceProxy!(ConnectionStream)`
../../.dub/packages/vibe-d-0.8.3-alpha.3/vibe-d/stream/vibe/stream/wrapper.d(198,22): Error: no property `waitForData` for type `InterfaceProxy!(ConnectionStream)`