…he graph

…-node

update graph option to paste nodes without overwriting the global graph style - adding vertical alignment for nodes

…ct_connection_types.

Closes #464

removed optimization flag.

Update viewer.py

fixed the drop event error

QPoint(): too many arguments
QPoint(xpos: int, ypos: int): argument 1 has unexpected type 'float'
QPoint(a0: QPoint): argument 1 has unexpected type 'float'

Update base_node.py

i have added NodeButton

Update node_widgets.py

Added NodeButton

version bump

update example with vertical aligned node

graph expose option to paste nodes without overwriting the style of the graph

Closes #472

…r-color-change

update the node ui item when the border color is adjusted

…-port-accept

Fixes copy and pasting nodes with accept_connection_types and/or reject_connection_types.