Update deps

[jetersen]

Just updating some deps and cleanup csproj this is built on top of what #51 did so please merge that first 😅

Checklist

• I have included examples or tests
• I have updated the change log
• I am listed in the CONTRIBUTORS file
• I have cleaned up the commit history (use rebase and squash)

Changes proposed in this pull request:

These are my proposed additions to #51
https://github.com/GitTools/GitTools.Core/pull/52/files/10fe1a1414e689710151938ec603e7f08da79f4b..9f0631a19b6a3eed7c91623b68ed0a04f1c62837

• removed app.config for Tests project it should be auto generated.
• update travis.yml
• add .vs/ folder to git ignore
• resharper decided to add some extra styling.

[twsl]

LibGit2Sharp v0.26.0-rc1is already out. Please update @Casz , so I don't have to create a new PR, thanks.
This needs to merge asap! @arturcic @dazinator

[asbjornu]

As GitVersion stopped using GitTools.Core in GitTools/GitVersion#1581, this PR is unfortunately not relevant anymore and the whole repository will be archived. Please try the latest build of GitVersion and see if it solves whatever problem you had when you submitted this PR. If the problem persists, please submit a new issue or PR against the GitVersion repository.