Specialized worker modes

What's new

• This update introduces two new worker modes, specialized worker and backendless specialized worker, for tasklet developers. Computation backends now enjoy more flexibility with options to manage their own data transfer and process life cycle.

Other noticable features:

• Setup for connections is simplified, and Edge protocol is now used as the default. See field address in config.
• Resource wall time (grain.resource.WTime) now has an adaptive mode that infers time limit based on statistics of the first few runs.

Breaking changes

• For grain.delayed.run, arguments nolocal and rpw are deprecated in favor of local

> sha256sum grain-bridge-linux-amd64
7c185076814428e30b8ed6be3bd0a0cfa7b3734f7e7c1fd63612d698675d7267  grain-bridge-linux-amd64