🔨 Updating state.ts to deprecate existing precondition apis and updating them with new

[LuffySama-Dev]

Hi @mitschabaude ,
As discussed in issue #1247 , I have replaced old api by deprecating them rather than removing.
Question:

Do we need to update this assertStatePrecondition too ?

Please review and let know if any changes are required.

[mitschabaude]

Very nice! If you're up for it, two things are needed as a follow-up (feel free to do this in a later PR)

• update /src/examples - maybe grep for .getAndAssertEquals etc, check if it's now deprecated and replace with require version
• add an entry to CHANGELOG.md (under ## Changed) about this change

[mitschabaude]

It would be nice if you could get rid of the code duplication, by making the assert* methods just call the require* versions. Something like

assertEquals(state: T) {
   return this.requireEquals(state);
}

etc

[LuffySama-Dev]

Hi @mitschabaude ,

As discussed above I have removed the duplicate code by making assert* call the require* version.
Please let me know if any change is required.

Thank You 😃

[LuffySama-Dev]

Hi @mitschabaude ,

As discussed above I have removed the duplicate code by making assert* call the require* version.
As well as built the project locally and adding screenshots of it for your reference.

Also, I am making changes to CHANGELOG.md for first time so can you please help to review it. I have added change in Unreleased for now. Let me know if we need move it.

Please let me know if any change is required.

Thank You 😃