v0.3+3 hotfix

This release fixes a few issues experienced mainly on windows.
Note: While Crow did receive an updated build / release system, it isn't included in this release due to our desire to retain backwards compatibility. You can expect the new system to be in full effect with the next minor/major release.

• Bug JSON strings not correctly dumped on Microsoft Windows with Multi Byte Character Set encoding. @lcsdavid #196
• Bug Unresolved conversion warning fix. @lcsdavid #174
• Updated All logos.