Check source and target are not the same

[jayvdb]

This is especially relevant for copy:, but also possible for targets:.

coala/coala-bears@51441bd added;

.ci/run_with_env.cmd: run_with_env.cmd

when .ci/ was in the template dirs, so the replacement was templating from the source file. As there was no jinja in that file, it copied identically every time, overwriting itself with itself.

configuration:
  template_dir:
    - .moban.dt/
    - .ci/

[chfw]

There exists such a functionality for targets. will transfer it over to copy function.

[chfw]

HashStore is the answer.

[jayvdb]

Probably worth making 'copy' a builtin template engine.