Allow unpinned packages in named files
As requested by @jameson.rollins, this MR updates render.py
to allow parsing named files that do not specify the version
or build_string
for the relevant package, e.g. the following is now a valid complete spec:
package:
name: mypackage
which is formally the same as
package:
name: mypackage
version: "*"
build_string: "*"