Better allocator support

CITATION.cff

@@ -0,0 +1,20 @@
+# YAML 1.2
+# Metadata for citation of this software according to the CFF format (https://citation-file-format.github.io/)
+cff-version: 1.0.3
+message: If you use this software, please cite it using these metadata.
+title: 'Hashinator: A hybrid hashmap designed for heterogeneous computing.'
+doi: 10.5281/zenodo.11396297
+authors:
+- given-names: Kostis
+  family-names: Papadakis
+  affiliation: University of Helsinki
+- given-names: Markus
+  family-names: Battarbee
+  affiliation: University of Helsinki
+- given-names: René
+  family-names: Widera
+  affiliation:
+version: 1.0.1
+date-released: 2024-05-30
+repository-code: https://github.com/fmihpc/hashinator
+license: cc-by-4.0

README.md

@@ -27,8 +27,11 @@ No installation required. Just include  "hashinator.h" . However, if you plan
 
 ## Run the tests   
 ```
-meson wrap install gtest # skip if you have gtest installed system wide and pkg-config can find it. 
-meson setup build  --buildtype=release 
+cd hashinator   
+mkdir subprojects
+meson wrap install gtest 
+meson setup build  --buildtype=release
+meson compile -C build --jobs=8
 meson test -C build
 ```
 
@@ -150,6 +153,45 @@ int main()
 	hmap.insert(src.data(),src.size());
 }
 ```
+### Hashinator and SplitVector can also be used with external allocators   
+
+```c++
+#include "splitvec.h"
+//main.cu
+using vector = split::SplitVector<int,std::allocator<int>>;
+
+
+int main()
+{
+	vector* vec = new vector{1,2,3,4,5};
+	vec->reserve(128);
+	std::cout<<vec[3]<<std::endl;
+	delete vec;
+}
+```
+
+```c++
+//main.cpp
+#include "hashinator.h"
+
+int main()
+{
+
+   Hashmap<uint32_t,uint32_t,std::allocator<uint32_t>> hmap;
+
+   //Write
+   for (uint32_t i=0 ; i<64; ++i){
+      hmap[i]=rand()%10000;
+   }
+
+   //Read
+   for (const auto& i:hmap){
+      std::cout<<"["<<i.first<<" "<<i.second<<"] ";
+   }
+   std::cout<<std::endl;
+}
+```
+
 `nvcc   main.cu  -std=c++17  --expt-relaxed-constexpr --expt-extended-lambda -gencode arch=compute_80,code=sm_80 -o example`
 
 You can have a look in the Doxygen for a more feature-rich explanation of the methods and tools included!