v0.19.0

What's Changed

• Get coordinate file header info using gemmi and get map cell/sg for card info by @stuartjamesmcnicholas in #460
• Set default value for depth-cue atom labels to default by @stuartjamesmcnicholas in #461
• Improvements to "Import dictionary" by @stuartjamesmcnicholas in #462
• Option for data to be not embedded in save session file (with George Coldstream CCPEM) by @stuartjamesmcnicholas in #463
• 4oo8 map symmetry fixed in Coot.
• Ability for Lhasa to obtain Adedrg ligand dictionaries from Bansu external server (behind BIG warning)
• Coot commit : pemsley/coot@b33d5c5
• Lhasa commit:moorhen-coot/LhasaReact@452dabe