Sceptre

Added

- Support for `stack_group_config` via the `Stack()` API.

- Support for accessing `stack_group_config` in Templates

- `--ignore-dependencies` flag to CLI and API.

Removed

- `write()` from `sceptre.config.graph.StackGraph`

Fixed

- Describe commands output formatting

- Website Page titles

Nonfunctional

- Updated Project docs

- Updated Website Documentation

- Removed unnecessary string from CLI output

Fixed

- Added missing `stack_group_config` attributes to Stack.

Added

- StackGraph (5171ae0)

- SceptreContext (c17cfc5)

- SceptrePlan (ab38157)

- SceptrePlanExecutor (ab38157)

- Support for cross-StackGroup dependencies (0b104db)

- StackActions (e8e34e8)

Removed

- Environments. Stacks & their relationships are now held in StackGraph
(0b104db)

Changed

- Config.yaml `template_path` attribute. By default Sceptre uses "templates" as
the root directory for `template_path` so the user should not specify
`templates/` as part of the `template_path` attribute (0b104db)

- Update docstrings (0b104db)

- Stack class. The functions available to Stacks are stored in StackActions
(0b104db)

Nonfunctional

- Updated project documentation such as README (0b104db)
- Changed project cocs to use Markdown format (README, CHANGELOG, CONTRIBUTING)
(0b104db)

- Fix Config dict merge strategy returning None

- Fix KeyError when merging configs

- Update Click and PyYaml dependency versions
- Improve delete-change-set output message
- Add stack configuration merging strategies
- Add AMI Resolver to contrib/
- Fix launch environment dependency path
- Add error message for non-leaf environments
- Add KMS resolver to contrib
- SSM resolver to contrib
- Improve error handling in CLI and StackOutput
- Amend linting for integration tests and docs
- Decrease the number of circleci parallel runs
- Update Jinja dependency version to `<=2.8`
- Add ".template" as allowed file extensions for templates
- Add bash-completion script to contrib
- Add a contrib directory for non-core community contributions
- Update docs Makefile
- Add HTML title header and icon to docs