Strikethrough, italic and bold problems

[c-c-k]

Hello,
I have started using this plugin for markdown with nvim-treesitter and noticed that strikethrough ~~STRIKETHROUGH~~ , italic *ITALIC* and bold **BOLD** seem to work badly.

solarized-normal

STRIKETHROUGH

This one seems to be a bug, the line defining the strikethrough highlight is:

syntax['Strikethrough'] = {fg=colors.base01,strikethrough=true}

instead of

syntax['Strikethrough'] = {fg=colors.base01,style='strikethrough'}

It is later used in syntax['@text.strike'] = syntax['Strikethrough'].

ITALICS

This one might be a bug but I'm not sure, the line defining the italic highlight is:

syntax['@text.emphasis'] = {fg=colors.base1,bg=colors.base03,style='bold'}

instead of

syntax['@text.emphasis'] = {fg=colors.base1,bg=colors.base03,style=utils.italics()}

ITALICS AND BOLD

Both italics and bold set bg=colors.base03, this doesn't seem like a bug but it is a little ugly, maybe this should be removed?

Other solarized variants

The other solarized variants do not contain the -- Text {{{ section with the syntax['@text... highlight definitions, I'm not sure if this is intentional or not.