fix(icons): add new icons, use icomoon for generating fonts

additions
+ .arrow-*: directional arrows with tails
+ .metric: a 'scale' icon
+ .filter: a funnel for filter
+ .game-upgrade: upgrade icon for game
+ .round-dollar: price icon

changes
process icon changed
~ .hellipsis -> .hdots
~ .vellipsis -> .vdots
~ .dodecagram -> .certificate
~ .round-warning* -> .round-exclaimation
~ .new-object -> .object-plus
~ .circle-half-pre/post -> .circle-fill-left/right
~ .document -> .file
~ .wrench-hammer -> .tools
~ .gamepad -> .game
bump(version): bump to 1.3.0