keep variables value between 2 apply

[davidB]

When I re-apply a template on an folder, I want to have the default value for variables set to the value used during previous apply.

Value should be stored as part of the target folder (by default):

• to allow move of the folder and keep the feature
• to allow to share (via git,...) the folder and allow other to re-apply with the previous value

Priority order for default value:

• cli
• previous apply
• value from template (top to bottom)

The value should be linked to the template that declare the variable ? use case:

• I apply 2 templates A & B with the same variable delared in both, I use different value for each, when re-apply remember the value for A and the value for B
• I apply 1 template A that import B, when re-apply A remember the value, if remember only B reuse the same value

[davidB]

And also allow to use thoses variable file to create a project

see:

• https://cookiecutter.readthedocs.io/en/1.7.2/tutorial1.html#cookiecutter-json
• .cookiecutter.json of a template