NVUI v0.1.3

Improvements:

• :NvuiCharspace now accepts floating-point numbers so you can change letter spacing by small margins
• The command line will link with your color scheme by default, if you haven't set colors using :NvuiCmdBg/:NvuiCmdFg

Changes:

• nvui now uses the native title bar by default. You can get the custom titlebar by passing the --titlebar command-line flag (#67)

Fixes:

• Fixed broken rendering on Windows with non-default DPI displays (#46 #30)
• Fixed some keys not being registered on Mac when modifiers are pressed. Note: Following Neovim-Qt, Ctrl maps to <C-, and Cmd maps to <D- (#69)