Error messages are not as useful as they could be

[mofax]

Error messages, could be made more useful.
for example, about 15 minutes after starting out with svelte, I got hit with this

svelte version 1.3.0
compiling Button.html...
Unexpected end of input
 9:     }
10:   };
11: </script>

after a very long long period of agony, I discovered that in my markup, instead of <button></button> I had done <button><button>

checkout example on repl

A more useful error could point out that <button> is missing a closing tag.

[Rich-Harris]

Sorry for the delayed response — this is fixed in 1.8.1. Thanks!