Implement support for specifying per-template versions in paket pack

[eiriktsarpalis]

This PR attempts to address the problem described in #1265. It incorporates the possibility to supply specific version numbers on a per-template basis:

paket pack version 1.1.2 specific-version Experimental.Lib 0.0.1-alpha specific-version Another.Experimental.Lib 1.0-beta

This has the behaviour of overriding the version number in specified template id's and ensures that this is reflected in wherever CURRENTVERSION is being replaced. When running the above command, the following file:

id Another.Experimental.Lib
dependencies
     Core.Lib CURRENTVERSION
     Experimental.Lib CURRENTVERSION

should generate a package equivalent to the template below:

id Another.Experimental.Lib
version 1.0-beta
dependencies
     Core.Lib 1.1.2
     Experimental.Lib 0.0.1-alpha

Please review. I will be posting a corresponding PR to the FAKE paket components to reflect this change.

[inosik]

I like this 👍

I'm currently working on something, which would help us to keep the dependencies node out of paket.template, so we don't need to repeat what we might have in paket.references.

Look here for more.

[forki]

thx. and sorry that I didn't fix that other issue yet.

[eiriktsarpalis]

Thanks! I've updated my code to use the latest update. Here's what it looks like: mbraceproject/MBrace.Core@807eb2f#diff-6074983490330a0aac1bd23c958232d7R105