Add data-sg-replace functionality

[kholdrex]

#62

This PR adds a new data attribute, data-sg-replace. This attribute allows for replacing the browser's history state instead of pushing a new state when navigating.

Changes

• Modified the visit function to accept a suggestedAction parameter.
• Added a handler for the data-sg-replace attribute in the HandlerBuilder class.
• Updated the event listeners to check for data-sg-replace and pass the appropriate action.
• Added tests for the new data-sg-replace functionality.

Tests

• Added a new test to ensure visit is called with the replace action when the data-sg-replace attribute is present.
• Updated existing tests to ensure they continue to work with the additional context of the suggestedAction parameter.

[jho406]

Another nice PR! Thank you. I'd like to add some additional context to this functionality. The API that I'm leaning towards for this story look like this:

<a href="/posts" data-sg-visit data-sg-replace>

data-sg-replace sets an extra parameter to the visit function only. Its in the same vein as the existing data-sg-placeholder functionality that look like this:

<a href="/posts" data-sg-visit data-sg-placeholder="/somekey">

My comments below will revolve around that leaning.

[jho406]

Looking great! Just a few more comments from me.

[jho406]

Great work! I'll give this a test during the weekend, and merge.

[jho406]

This looks great! I'm marking this for a 1.0 release. I don't want to merge this in quite yet as I want to focus on the typescript conversion, but def on my radar!