r5

* fix the make_dirs custom filter to behave as specified. Previously it would
  create a directory from it's piped input, instead of it's parameter as it was
  supposed to.

r4

This release marks the first real brand new feature: side-effectful filters.
These are custom `pongo2` filter extensions that make it more useful as a
systems templating utility by allowing single templates to act a little more
like scripts, removing the need for bash-boilerplate in complex templating
scenarios.

* Add the first custom scripting filters to p2
  * Add `--enable-filters` and `--enable-noop-filters` command line arguments.
* Add `write_file` and `make_dirs` side effectful filters.

r3: Release 3

* Switch to upstream master of pongo2 (notably adds the `split` filter)
* Add --output command.
* Properly handle shell-quoting in shell-style environment files.

r2: Merge pull request #2 from wrouesnel/update

Update dependencies, lock to pongo.v3

First release

First release version of p2cli. These binaries are built principally to enable easy dockerfile use. Versioning is by numerical increment, with git commit being encoded in the binary.