Pyodide 0.27 Release

Pyodide v0.27.0 is out. This release was focused on improving the long-term
stability of Pyodide.

Welcome Agriya Khetarpal to the Pyodide team

Agriya Khetarpal has joined as a new maintainer. Agriya has been active in the
Scientific Python area and is a contributor to NumPy, SciPy, and scikit-learn.
He has already significantly strengthened Pyodide’s support for various
Scientific Python packages.

Build System Improvements

Decoupling pyodide-build from Pyodide runtime

pyodide-build is a tool that builds Python packages to run in Pyodide.
Previously, the version of pyodide-build was strongly coupled to the version
of Pyodide, meaning that if you wanted to build a package against a specific
version of Pyodide, you had to use the corresponding version of pyodide-build.
The problem with this approach was that even if we improved the build system,
downstream users would have to wait for the next Pyodide release to use it.