Vertex statement: Many languages use "`" as syntax

[CrazyPython]

Many languages, such as Bash and JS, use "`" as valid syntax.

Furthermore, while implementing the spec, I noticed it doesn't say escaping "`" is required.

I propose changing the character to "@", a character very rarely used in programming languages.

Alternatively, we could use:

• An end token

  clean = 
  rm -rf build
  end clean

• Here strings
• Indentation

[r2d4]

To be fair - my reference was Go's string literal syntax.

• ", $ should be parsed without confusion, for templating and bash scripts
• simple multiline support is important

I'm a little hesitant to use here strings/end tokens because it requires a good amount of work for each label. Indentation doesn't seem like a bad idea, but I'm a little burned from writing long configuration in YAML.

Let me think about this a bit, and I'm happy to listen to what others think.

[CrazyPython]

My proposal:

task = @echo hi@