Add recipes for pre-commit and its dependencies

This patch adds pre-commit as well as the dependencies not yet available in the defaults channel.

conda/aspy.yaml/meta.yaml

+{% set name = "aspy.yaml" %}
+{% set version = "1.1.1" %}
+{% set file_ext = "tar.gz" %}
+{% set hash_type = "sha256" %}
+{% set hash_value = "0a77e23fafe7b242068ffc0252cee130d3e509040908fc678d9d1060e7494baa" %}
+
+package:
+  name: '{{ name|lower }}'
+  version: '{{ version }}'
+
+source:
+  fn: '{{ name }}-{{ version }}.{{ file_ext }}'
+  url: https://pypi.io/packages/source/{{ name[0] }}/{{ name }}/{{ name }}-{{ version }}.{{ file_ext }}
+  '{{ hash_type }}': '{{ hash_value }}'
+
+build:
+  number: 0
+  entry_points:
+    - identify-cli=identify.cli:main
+  script: "{{ PYTHON }} -m pip install . --no-deps --ignore-installed --no-cache-dir -vvv"
+
+requirements:
+  host:
+    - pip
+    - python
+    - setuptools
+  run:
+    - python
+    - pyyaml
+
+test:
+  imports:
+    - aspy
+    - aspy.yaml
+
+about:
+  home: https://github.com/asottile/aspy.yaml
+  license: MIT
+  license_family: MIT
+  summary: A few extensions to pyyaml.
+
+extra:
+  recipe-maintainers: sgaist