Bump Fermi version to 0.3.0

0.2.0 way out of date. Many major features have been included/modified and should now be present on 0.3.0 avaliable in Julia registry. These include:

- Updated dependencies 
- Arrays modified to use `TBLIS`
- Compeltely new `IntegralHelper`
- Single precision and DF computations built upon `IntegralHelper` type signature
- Recent UHF implementation.

Version 0.3.0 should be much closer to what is intended for 1.0

@JuliaRegistrator register

Project.toml

@@ -1,7 +1,7 @@
 name = "Fermi"
 uuid = "9237668d-08c8-4784-b8dd-383aa52fcf74"
 authors = ["gustavojra <[email protected]>"]
-version = "0.2.0"
+version = "0.3.0"
 
 [deps]
 Formatting = "59287772-0a20-5a39-b81b-1366585eb4c0"