Merge remote-tracking branch 'tami/reenable-extensionDevelopmentPath-…

…flag' into reenable-extensionDevelopmentPath-flag

# Conflicts:
#	package-lock.json
#	package.json
#	packages/extester/src/cli.ts
#	packages/extester/src/util/coverage.ts
#	tests/test-project/package.json