Conflict between tern and tern-rest-api dependency versions

[nishakm]

I'm having trouble installing tern and tern-rest-api in the same development environment. The problem seems to be the requirements.txt and requirements-dev.txt files that constrain the installation. I find that specifying just the direct dependencies for tern-rest-api (in this case - just flask-restx resolves the problem. I am more familiar with piptools than pipenv, and I like the dev/release balance there. My suggestion would be to migrate pipenv to piptools.