Merge pull request web3swift-team#17 from matterinc/develop

Quick fix for scrypt performance

Merge pull request web3swift-team#211 from BANKEX/develop

Remove libsodium

Merge pull request web3swift-team#201 from BANKEX/develop

fix gas price setting for transaction
attempt to fix some race condition on sending a transaction

Merge pull request web3swift-team#196 from myeveryheart/master

seedFromMmemonics should use language

Merge pull request web3swift-team#185 from BANKEX/develop

fix assigning user gas limit before sending a transaction

Merge pull request web3swift-team#178 from BANKEX/develop

1.0.0 release

Merge pull request web3swift-team#157 from BANKEX/develop

reduce verbosity, make tests more strict

Merge pull request web3swift-team#145 from BANKEX/develop

SO link added

Merge pull request web3swift-team#126 from BANKEX/develop

fix gas limit estimation

Merge pull request web3swift-team#126 from BANKEX/develop

fix gas limit estimation