Update to new type resolution in asc

[willemneal]

Currently fails tests. Looking into it.

[willemneal]

@MaxGraey Not sure why it's failing travis. I switched the combination operators, e.g. <<= 1, to their full forms so that it would compile. I just checked the newest fix @dcode merged to fix this issue and it still doesn't work. Since near's production code now relies on this package, could we merge this for now (after figuring out why travis is mad) and then have a later PR when the compiler is resolved?

[MaxGraey]

@willemneal In local I can't build wasm module as well:

Require stack:
- ////bignum.wasm/bignum.wasm/node_modules/assemblyscript/cli/asc.js
- ////node_modules/assemblyscript/bin/asc
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.