* add newline if necessary when adding instructions
0.0.9
* Do not overwrite multiple FROMs for multi-stage builds * Fix "LABEL summary=$SUMMARY" handling
0.0.8
* Fix b2u()/u2b() for Python 3 * Concatenated variables are now correctly expanded
0.0.7
* New `context_structure` property, for examining environment variables and labels at each Dockerfile line (33) * Improvements to spec file
0.0.6
- you can now specify a starting environment for environment variable substitution to use (20) - a file-like object can now be used instead of a path (23) - comments in multi-line instructions are now correctly skipped (16) - new `__version__` module attribute