Siacoin SC Wallet-v1.1.2

This is a patch release to accompany the v1.1.2 release of Sia. It includes minor style changes and better error reporting.
Thanks to @betaboot for contributing to this release!##Downloads
Sia-UI-v1.1.2-linux-x64.zip
Sia-UI-v1.1.2-linux-x64.zip.sig
Sia-UI-v1.1.2-osx-x64.zip
Sia-UI-v1.1.2-osx-x64.zip.sig
Sia-UI-v1.1.2-win32-x64.zip
Sia-UI-v1.1.2-win32-x64.zip.sig
Source code (tar.gz)
Source code (zip)