fix(sass): fix potential null pointer, though it really should never …

…happen

fix(sass): use webpack/rollup modules for non-optimized build, use op…

…timization data for prod/optimized buids

feature(webpack): use a vendor bundle to minimize code that needs re-…

…bundling and source map generation

chore(dependencies): add reflect-metadata to the dependency list

chore(package): remove peer dependencies as they cause more problems …

…than they solve

1.3.9

Merge pull request ionic-team#1063 from ionic-team/wip-lab-sdlc

Wip lab sdlc

fix(sass): fix .sass files not being watched (ionic-team#957)

test(optimation): tree shaking tests

tree shaking tests

chore(changelog): 1.3.6 changelog

1.3.6 changelog