Release v0.3.0

[kyllingstad]

Everything seems to be in place with respect to integrating SciD into the DlangScience infrastructure now. Unless there are other changes that need to be made in the SciD repo itself, I suggest we make it a release. Changes since the previous release are:

• Moved to DlangScience
• Removed deprecated scid.bindings.blas package
• Removed the oldest of the three(!) build systems plus files related to two different doc generators...

Once this is merged, I'll push the v0.3.0 tag for Dub.

[9il]

This #35 should be merged first, thought

[9il]

LGTM