Is your feature request related to a problem? Please describe.
I would like to align equations, but not have them centered, but "flushed" left like the flalign environment.
I doesn't seem like the provided aligned environment supports this.

Describe the solution you'd like:
Maybe provide a flaligned environment?

Link to or name of a (La)TeX package that provides the same feature:
flalign from amsmath

Describe alternatives you've considered:
I haven't found any alternatives that can do this.

Additional context: