This adds the following command
```
aiken watch
```
There are some open questions to answer, though:
- I really like the ergonomics of `aiken watch`; but it also makes sense
as a flag to `aiken check` or `aiken build` etc.; should we just
support the flag, the command, or both?
- Right now I duplicated the with_project method, because it forces
process::exit(1); Should we refactor this, and if so, how?
- Are there other configuration options we want?
This is still a bit clunky as the interface is expecting parameters in UPLC form and we don't do any kind of verification. So it is easy to shoot oneself in the foot at the moment (for example, to apply an integer into something that should have received a data). To be improved later.
This calculates a validator's address from validators found in a blueprint. It also provides a convenient way to attach a delegation part to the validator if needs be. The command is meant to provide a nice user experience and works 'out of the box' for projects that have only a single validator. Just call 'aiken address' to get the validator's address.
Note that the command-line doesn't provide any option to configure the target network. This automatically assumes testnet, and will until we deem the project ready for mainnet. Those brave enough to run an Aiken's program on mainnet will find a way anyway.
This is a bit cleaner, as the 'cmd/new' had many on-the-fly functions
which are better scoped inside this module.
Plus, it plays nicely with the std::str::FromStr trait definition.
This allows in case of issues with dependencies to at least safely
remove cached packages. Before that, it could be hard to know where
are even located the cached files without looking at the source code.
```
Clearing /Users/ktorz/Library/Caches/aiken/packages
Removing aiken-lang-stdlib-7ca9e659688ea88e1cfdc439b6c20c4c7fae9985.zip
Removing aiken-lang-stdlib-main@04eb45df3c77f6611bbdff842a0e311be2c56390f0fa01f020d69c93ff567fe5.zip
Removing aiken-lang-stdlib-6b482fa00ec37fe936c93155e8c670f32288a686.zip
Removing aiken-lang-stdlib-1cedbe85b7c7e9c4036d63d45cad4ced27b0d50b.zip
Done
```
Pi Lanningham