chore: update acknowledgement in README

README.md

@@ -106,17 +106,10 @@ Varint  | int32, int64, uint32, uint64, sint32, sint64, bool, enum
 Length-delimited| string, bytes, embedded messages, packed repeated fields
 32-bit 	| fixed32, sfixed32, float
 
-## Worklist
-- [x] named field via NTTP ([#6](https://github.com/PragmaTwice/protopuf/pull/6))
-- [x] dynamic reflection on field names and numbers ([#9](https://github.com/PragmaTwice/protopuf/pull/9))
-- [x] compatibility test between protopuf and protobuf ([#10](https://github.com/PragmaTwice/protopuf/pull/10))
-- [x] benchmark test between protopuf and protobuf ([#11](https://github.com/PragmaTwice/protopuf/pull/11))
-
 ## Known issues
 - There is [a known bug](https://developercommunity2.visualstudio.com/t/Wrong-compile-error-in-MSVC:-identifier-/1270794) related to template parameter lists of lambda expressions in Visual Studio 2019 Version 16.8, which can produce a wrong compilation error while compiling protopuf
 - Although class type in NTTP ([P0732R2](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0732r2.pdf)) is implemented in GCC 10, there is a CTAD bug ([PR96331](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96331), exists until GCC 10.2) to reject valid NTTP usage, which prevent protopuf to compile successfully
 
-## Special Thanks
-to [JetBrains](https://www.jetbrains.com/?from=protopuf) for its [Open Source License](https://www.jetbrains.com/community/opensource/?from=protopuf) of All Products Pack
-
-![JetBrains Logo](https://www.jetbrains.com/company/brand/img/jetbrains_logo.png)
+## Acknowledgement
+- to @dngrudin for the contribution of out-of-bounds checking and unsafe/safe mode
+- to [JetBrains](https://www.jetbrains.com/?from=protopuf) for its [Open Source License](https://www.jetbrains.com/community/opensource/?from=protopuf) of All Products Pack