Change currency units

[JesseAbram]

Changes currency units to match Polkadot's (which we decided 10 decimals so this should have been changed with that) of note turns existential deposit down to 0.01

Closes #888

[ameba23]

🥇

[HCastano]

Code looks fine, but on my end PJS still shows that we have 12 decimals

Not entirely sure why though, maybe outdated metadata somewhere 🤷 ?

Also, I wonder if this requires a spec_version bump or something 🤔

[JesseAbram]

Code looks fine, but on my end PJS still shows that we have 12 decimals

Not entirely sure why though, maybe outdated metadata somewhere 🤷 ?

Also, I wonder if this requires a spec_version bump or something 🤔
maybe but we def have a spec bump in the next release so let's not overthink it

fixed it, we were not adding the properties to the dev chainspec