sqlite3 resultset processing
spec: Leaf#tree and Node#tree
typo fix
implemented Node#tree and Leaf#tree
type validation at Node#initialize
root node detection method changed
score_up/down command skeleton
tagpopup window
imcomprehensive work around

image not drawed when tagpopup moved to right side of main window
without this patch
tagpopup bottomright
Merge branch 'master' into dev
use tree_mock when making root_node for test
DRY on @root_node =
renamed tree_mock -> tree_stub
Merge branch 'master' into tagpopup
Node#first; validation
Merge branch 'master' into HEAD
Node#[] now accepts multiple tags
spec: nodes tagged with slash should have sane leaves
spec: nodes tagged with slash should not have duplicate tag path