change `Env` to `Assemble` to avoid confusion in stack traces
change `Env` to `Assemble` to avoid confusion in stack traces

edrohler/assemble,cgvarela/assemble,edrohler/assemble,avr/assemble,xetryj/assemble,cgvarela/assemble,makotot/assemble,assemble/assemble,xetryj/assemble,assemble/assemble