IOS platform support is very important

[zoujiaqing]

The D language is not used much in the server world these days. 
Maybe we use a little bit more. But there's a lot of demand in 
the mobile space. We hope to use D language to write 
cross-platform basic code, and the upper layer USES SWIFT and 
JAVA for docking.

We found the LDC support for Android to be very good, but the iOS 
platform only had an early branch to test, which was incomplete 
and unstable.