0.7.2

What's Changed

Adds file validation and error hints:

  File "/path/to/env/dev.env" line 10, column 2:
   9:   ENVPATH: "${ROOT}/dev/env:${ROOT}/prod/env:${ENVPATH}"
>> 10:   PYEXE=/usr/bin/python3
   11:   PATH: "${ROOT}/dev/bin:${ROOT}/prod/bin:${PATH}"
SyntaxError: could not find expected ':'

Environment stack files are now executable directly (issue #24 )

$ ./env/hello.env -- echo {HELLO}
world

Fixes export and clear issue in 0.7.1:

$ ./env/hello.env --export

Full Changelog: 0.7.1...0.7.2