doc: changelog edits for release

Merge pull request NCAR#363 from NCAR/mitgcm-perturb

Fix for  MITgcm_ocean pert_model_copies

Merge pull request NCAR#358 from NCAR/bug-fix-ps-rand-local

Bug fix for ps_rand_local in the Bgrid Model

Merge pull request NCAR#348 from NCAR/build-system

Build tools for DART that do not need mkmf_ and path_names_ files

Merge pull request NCAR#355 from NCAR/bug-fix-rtps

bug-fix: rtps inflation

Merge pull request NCAR#350 from NCAR/verifying-installation-doc-update

Verifying installation doc update

Merge pull request NCAR#341 from Benjamin-Gunn/bugfix-nan-netcdf

Bug fix - Fixes issue if FillValue is NaN

Merge pull request NCAR#329 from jonlabriola/updt_localization

per obs type localization for 3D Cartesian location mod 
for use with CM1

Merge pull request NCAR#324 from NCAR/MITgcm_ocean_NBLING

MiTgcm-ocean NBLING Feature Branch

Merge pull request NCAR#330 from NCAR/CLM5_tutorial

CLM5-DART Tutorial