Environment tests
Update variable name to match unit name
Added Douglas and Einstein cases
Added tests for extra large values

Test “E” scientific notation formatting
New test coverage for ethutil/path.go
New test coverage for ethutil/big.go
Cleanup big_test.go
Added byte padding tests
added test for parsing bytes
add tests for ReadVarInt
added test for BinaryLength
added test for CopyBytes
add test for Bytes.String()
Remove fmt dependency
Added test for IsHex
Reorder tests to match source order
Added tests for FormatData
Restructure StorageSize string test
Add coverage for rand
Added more byte tests