gбновление зависимостей, рефакторинг кода, чтобы он выглядел как гошный проект

vendor/github.com/DataDog/zstd/hist.h

@@ -75,4 +75,11 @@ size_t HIST_countFast_wksp(unsigned* count, unsigned* maxSymbolValuePtr,
 unsigned HIST_count_simple(unsigned* count, unsigned* maxSymbolValuePtr,
                            const void* src, size_t srcSize);
 
+/*! HIST_add() :
+ *  Lowest level: just add nb of occurrences of characters from @src into @count.
+ *  @count is not reset. @count array is presumed large enough (i.e. 1 KB).
+ @  This function does not need any additional stack memory.
+ */
+void HIST_add(unsigned* count, const void* src, size_t srcSize);
+
 #endif /* USE_EXTERNAL_ZSTD */