Update VizCore and MTHVizMappings, modification of import functions and get mappings from jsongraph input

0.4.3 0.4.3

0.4.2 0.4.2

0.4.1 0.4.1

0.4.0 0.4.0

0.32 0.3.2

0.3.1 0.3.1

0.3.0 0.3.0

0.2.8 0.2.8

0.2.7 0.2.7

0.2.6 0.2.6

0.2.5 0.2.5