Improve algorithmic codegen, return multiline string

[ZibingZhang]

Overview

Algorithmic codegen now returns a multiline string instead of a very long single line string.

Details

We keep track of our indentation level as we traverse through the AST.

Example

old

\If{$x < y$} \State \Return $x$ \EndIf

new

If{$x < y$}
    \State \Return $x$
\EndIf

References

#57

Blocked by

None

[odashi]

Use collections.abc rather than typing for generic types.

Suggested change

	from typing import Generator
	from collections.abc import Generator

[ZibingZhang]

just curious as to why not use typing

[odashi]

See PEP585:

• https://docs.python.org/3/library/stdtypes.html#standard-generic-classes
• https://peps.python.org/pep-0585/

[odashi]

LGTM, merge this PR