- added symmetric positive definite inverse to memory benchmark - improved appearance of memory plot
- added symmetric positive definite inverse to memory benchmark
- improved appearance of memory plot

benralexander/efficient-java-matrix-library,JSRRR/efficient-java-matrix-library,dcheng-id/efficient-java-matrix-library,xingh/efficient-java-matrix-library,dcheng-id/efficient-java-matrix-library,zxdxjtu/efficient-java-matrix-library,qasta/efficient-java-matrix-library,qasta/efficient-java-matrix-library,xingh/efficient-java-matrix-library,adamaulia/efficient-java-matrix-library,bdgrider/efficient-java-matrix-library,hamedrab/efficient-java-matrix-library,JSRRR/efficient-java-matrix-library,zxdxjtu/efficient-java-matrix-library,benralexander/efficient-java-matrix-library,bdgrider/efficient-java-matrix-library,adamaulia/efficient-java-matrix-library,hamedrab/efficient-java-matrix-library