v0.4.0: support compile time features and env vars#3

rnag merged 18 commits intomainrnag/rust.aws-cdk-lambda:mainfrom

0.4.0-support-compile-time-features-and-env-varsrnag/rust.aws-cdk-lambda:0.4.0-support-compile-time-features-and-env-varsCopy head branch name to clipboard