Merge canary

[mvllow]

Before merging:

• Expose each variant, closes feature: Expose each variant as its own colorscheme #98
• Improve semantic highlighting, closes feature: Add support for Neovim's native LSP semantic tokens #107
• Prioritise user highlight overrides, closes [Feature Request] Expand user config to also deal with user specified style (bold / italics) setting #113
• Improve inactive background when dim_nc_background is set to true, closes dim inactive sign column #123

Breaking changes

• Use vim.api.nvim_set_hl for highlights

- highlight_groups = { Comment = { fg = 'muted', style = 'italic' } }
+ highlight_groups = { Comment = { fg = 'muted', italic = true } }

Features

• Support the blend key; Colours are blended against "base", or primary background

highlight_groups = {
  StatusLine = { fg = 'love', bg = 'love', blend = 10 }
}