Fix slowness with larger templates

Closes #69 and #71
Released 3.0.5

Making it more clear that sourced files are shell

Addresses part of the concerns from #69

Bumping version

More Bash 4.x compatibility issues found and fixed

Fix #67 - unbound variable error

Release 3.0.1

Releasing 3.0.0

Fixing a test, release 2.4.1

Bumping version

2.3.0 was already tagged

Fixing test script to return 0 on success

Leaning away from committing package.json

Thank you yutachaos!