Investigate Appveyor alternatives for more parallel builds: Github Actions; Travis; CircleCI
Appveyor's big downside is the single sequential job serialized across both dynamorio and drmemory repositories and across PR's and master merges. One single job is now down to ~23-24 mins thanks to #4059 (closed) which is not that different from a Travis invocation, but the lack of parallelism does cause pain.
Possible alternatives that now include Windows (all quite recently):
- Github Actions
- Travis: looks like it has only VS2017 and very few packages and is in early stages
- CircleCI