SNIP-26 - Allowance queries for SNIP-20 tokens

Merge pull request #88 from SolarRepublic/fix/snip-links

Update SNIP links in README.md

SNIP-25 - Improved privacy for SNIP-20 tokens

See more details about SNIP-25 here.

SNIP-24 - Query Permits

This release implements the SNIP-24 specification.

SNIP-23 - Improved UX to SNIP-20 Send Operations

This release implements the SNIP-23 specification.

Minor Update to Cargo.toml

This release includes a small tweak to the Cargo.toml file which should speed up compilation times.

Bugfix in Transaction History

This release fixes two minor bugs:

• Under some circumstances, when an address would show up more than once in the "from, sender, recipient" fields of transfers (e.g. if address A sends funds from address B to address A using allowance), the event would be registered in history multiple times.
• In transaction history, in the event of a BurnFrom operation, the burner and owner fields were flipped in the TransactionHistory response.

Bugfix in Allowance Expiration Check

This release fixes a minor bug. It was found that when giving a new allowance to an account whose previous allowance has expired, the new allowance's size would be the sum of the old allowance's size plus the new allowance's size.

Minor Release - Contract Status Query

This release adds the Contract Status query which lets users see if transactions have been halted by the admin.

SNIP-22 - Batch Operations

This release implements the SNIP-22 specification.

SNIP-21 - Transaction History and Private Memo

This release implements the SNIP-21 specification.