Escape character breaking css intellisense

[jess-mann]

.\+pd-all-lg {
	padding: 64px!important;
}
.\+pd-all-md {
	padding: 32px!important;
}
.\+pd-all-sm {
	padding: 7.999px!important;
}
.\+pd-all-none {
	padding: 0!important;
}

Extension not able to do class completion when classes contain escape character.

[enyo]

@ecmel Maybe there is a regression, because I'm not able to get autocomplete working for escaped classes (e.g.: .\@foo { } or .\+bar { })

[enyo]

@ecmel let me know if you need more input.

[ecmel]

@enyo Thank you for asking, just need to find some time to fix this. I moved to a simple parser for css- need to update the regex to account for escape chars. Pull requests are welcome.