using self or me instead of only member

here's a list of optimizations I wrote down to myself when tested these things before 4.1.5. I did not re-evaluate them on 4.1.7:

function initialize() {AppBase.initialize();} -> - (don't call parent): -20
new $.Ext -> new Ext: -4
$.Rez.Strings -> Rez.Strings : -4
private function -> hidden function: -22 (no difference in vars)
inline hidden functions that are only called once!
private const -> const: -20
Application.getApp().getProperty(key) -> using Toybox.Application as App; App.AppBase.getProperty(key): -3
function x(a) {[self.]mA = a; use mA} -> function x(a) {[self.]mA = a; use a}: -6
self.x -> x: 0
Dictionary d.get(k) -> d[k]: -9
Dictionary d.put(k,v) -> d[k]=v: -9