flalign and alignat break autonum

Question

After yesterday's unsuccessful attempt, I am continuing in my attempts to find out the limits of autonum. It seems that flalign and alignat environments break autonum. Here is an MWE that works fine:

\documentclass[8pt]{article}
\usepackage{amsmath,amsthm,hyperref,cleveref,autonum}
\newtheorem{thm}{Theorem}
\crefname{thm}{theorem}{theorems}
\Crefname{thm}{Theorem}{Theorems}

%======================================
% MWE 1
\begin{document}
\begin{thm}\label{thm1}
This is a very important theorem.
\end{thm}

\begin{thm}\label{thm2}
Another very important theorem.
\end{thm}

The first theorem is \cref{thm1}, and the second is \cref{thm2}.

\end{document}

One which has an alignat (resp. flalign) environment, does not compile so smoothly:

\documentclass[8pt]{article}
\usepackage{amsmath,amsthm,hyperref,cleveref,autonum}
\newtheorem{thm}{Theorem}
\crefname{thm}{theorem}{theorems}
\Crefname{thm}{Theorem}{Theorems}
%======================================
% MWE 2
\begin{document}
\begin{thm}\label{thm1}
This is a very important theorem.
\end{thm}

%\begin{flalign}
%x &= y \implies & y &= x \label{eq4}\\
%y &= z \implies & z &= y \label{eq5}\\
%v &= w \implies & w &= v \label{eq6}
%\end{flalign}

\begin{alignat}{3}
x &= y \implies & y &= x \label{eq4}\\
y &= z \implies & z &= y \label{eq5}\\
v &= w \implies & w &= v \label{eq6}
\end{alignat}

\begin{thm}\label{thm2}
Another very important theorem.
\end{thm}

The first theorem, which appears before the \texttt{flalign} environment is \cref{thm1}, and the second, which appears after, is \cref{thm2}.
The first equation is \cref{eq4}.

\end{document}

My main problem then is that while autonum provides support for some math environments, it does not for all. I wonder if there is a workaround where I can use it for the math environments it does provide support for and not have it interact with labels in other environments.

As before, my larger problem is to use cleveref with a package that numbers only referenced equations.

Answer 1

This was a bug, which is fixed with version 0.3. Both environments are now supported in autonum, such that automatic numbering should work as in amsmath's other math environments. Thanks for reporting.