MaSuRCA 4.0.6

The 4.0.6 release introduces code cleanup and performance improvements in MaSuRCA assembly pipeline, POLCA error correction/assembly evaluation tool and SAMBA scaffolder.
In response to the several issues raised by the users with use of POLCA and chromosome scaffolder, I recommend that users install MaSuRCA in a separate folder with the provided install.sh script as opposed to installing it globally into /usr/local/bin. MaSuRCA is self-contained and it does not require root privileges to compile, install and run. Many components of MaSuRCA depend on having appropriate versions of binaries such as samtools, mummer and jellyfish, that are provided with MaSuRCA and may produce errors is the system attempts to use different versions of these tools available on the $PATH. For these specific versions MaSuRCA will always first look to use the binaries installed under /path-to/MaSuRCA-x.x.x/bin/.