Update to latest version of Solidity

[samajammin]

Summary

Currently the compiler is hardcoded to 0.5.10 & all templates use that version.

Let's update the compiler & the templates to use the latest version (0.6.8).

Motivation

Since Ethereum Studio's core purpose is to onboard Ethereum developers, we should be using the latest & best (stable) tools available. We shouldn't teach approaches & patterns that will change when they go to set up a local dev environment.

Describe alternatives you've considered

• Add ability to configure the Solidity compiler #245

Additional context

None

[javier-tarazaga]

We always end up running into this and would be much better to concentrate on #245 so we have a good way to actually be smart about it and use the right solidity version.

[ChrisChinchilla]

I was sure I already updated to 0.6 somewhere? Or am I being very forgetful?

[samajammin]

I was sure I already updated to 0.6 somewhere? Or am I being very forgetful?

@ChrisChinchilla nope, as I mentioned, the project is currently hardcoded to use 0.5.10. Check out #245 for more details.

[ChrisChinchilla]

I don't deny that, I just feel that I submitted an update to this already 🤔

[ChrisChinchilla]

Maybe it was to 0.5.x