Upgrade to atom-shell@0.15.3
:non_potable_water: Unsubscribe from window resize in EditorComponent

This fixes a major memory leak
Upgrade to markdown-preview@0.97.0
Upgrade to language-yaml@0.15
Upgrade to language-sql@0.10
Upgrade to markdown-preview@0.99
Add new atom icns
Merge branch 'atom' into development