Add meta EIP for Tangerine Whistle (EIP 150 Hard Fork) (#608)
* Add meta EIP for EIP 150 Hard Fork
* Rename to Tangerine Whistle
* link to EIP-150 in meta-hf spec
* assign no. 608 to Tangerine Whistle meta-eip
* add references and aliases to EIP150 meta-EIP
GitHub Diff