Need to add a limit for the minimum transferable AIN value

[platfowner]

Currently we are not applying any limit on the minimum transferable AIN value.
When we transfer 1e-39 AIN for example, the balance changes 50.0948888888891 -> 149.90438888888912 for example, which means except the tx fee 0.1905 AIN, 0.00000000000002 (2e-14) AIN is subtracted from the sender's balance, and it's not the same as the transferred value 1e-39 AIN.

This happens because of the 52 bits limit of the mantissa:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number

So, we need to apply a limit to the minimum transferable AIN value.
As 2^52 ~= 4.5 x 10^{15}, some value around 10^{-14} would be safe.

[platfowner]

Updates:
As the total supply is 0.7 billion (700,000,000) AIN, the integer parts consumes 9 digits. So only 6 (= 15 - 9) digits are available for non-integer values. So 10^{-6} would be safe.

[platfowner]

Ref:

• https://bitbucket.org/comcomai/ain-connect-extension/pull-requests/41
• https://bitbucket.org/comcomai/afan-app/pull-requests/451
• https://bitbucket.org/comcomai/afan-app/pull-requests/453

[platfowner]

Resolved with release.