atlas-editor: implement grid parameters default tip

atlas-editor: first attempt to attach a document

replace glew with glad

tools: make use of toolkit independent of specific backend

atlas-editor: fix expansion of drawing area

first attempt to create a UI for the atlas editor

update make rules for mesh.o

fix bash-specific syntax in update-rules.sh

implement add/remove to node dictionary

remove too verbose logs when meshes are allocated or freed (which happens a lot)

(0) -300 -100 -10 tip

mercurial