starling 4.0.0

This tree structure is a binary merkle tree with branch compression via split indexes.
Documentation
name: DB-Tests

on:
  push:
    branches: [ "stable", "beta", "nightly" ]
  pull_request:
    branches: [ "stable" ]

env:
  CARGO_TERM_COLOR: always

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
      - name: Build
        run: cargo build --verbose
      - name: Hashbrown
        run: cargo test --features="hashbrown" --verbose
      - name: RocksDB
        run: cargo test --features="rocksdb bincode" --verbose -- --test-threads=1