Empty string attributes as inputs (non-bracketed)

[tjwitz]

First off, thanks for this awesome project.

I have found that when using non-bracketed inputs with an empty string value, the result is not an empty string, it is the string 'undefined'. Looks like the regex is pulling out an undefined value which is then wrapped in quotes here: https://github.com/MTobisch/ngx-dynamic-hooks/blob/b52b3414eecad96c1137485e7b3339e36fa5dd9f/projects/ngx-dynamic-hooks/src/lib/parsers/selector/services/bindingStateManager.ts#L57

I forked the example stackblitz and updated it with a few attributes on the dynamic content to demonstrate the issue precisely: https://stackblitz.com/edit/ngx-dynamic-hooks-quickstart-uuj6pb?file=src%2Fapp%2Fapp.component.ts

[MTobisch]

Thanks for noticing that!

I've gone ahead and fixed it in the new 1.7.1 release. Empty values from non-bracketed inputs will now properly result in empty strings.