Updates the backlog.

Backlog.md

@@ -1,14 +1,8 @@
 NFluent backlog
 ===============
 
-+ Continue the library breakthrough (from an extension method model to a IFluentStuff one)
-	+ migrate all methods from bool to void
-	+ Make every FluentExceptionMessage a two liners
-	+ Generate IEnumerable unit tests via T4 templates? (to test with all concrete collection type)
-+ Fix the methods documentation (after the breakthrough)
-+ Fix the StyleCop warnings
 + Decide which entry point to provie for the lib
 	+ may be interesting to introduce t4 template to generate the various versions of this entry-point
-+ git merge with main branch, and push
++ Make every FluentExceptionMessage a two liners
 + Publish v1.0 into nuget
 + Spread the word about the library to have feedback and first users