LDC 1.25.0

[kinke]

Glad to announce LDC 1.25 - some highlights:

- Based on D 2.095.1.
- LLVM for prebuilt packages bumped to v11.0.1; support added for 
LLVM 11.1 and upcoming 12.0.
- Profile/trace LDC invocations via --ftime-trace.
- New Windows installer and native 'Apple silicon' package.
- New experimental template emission scheme for 
-linkonce-templates. This option can significantly accelerate 
compilation times for optimized builds (e.g., 56% faster on my 
box when compiling the optimized Phobos unittests).

Full release log and downloads: 
https://github.com/ldc-developers/ldc/releases/tag/v1.25.0

Thanks to all contributors & sponsors!