typo fix
Merge pull request #355 from faizkhan00/develop

typo fix
dividend fees from 330000
correct release date for v9.45.0
[FIX] used tx_hash
[#364] raise error when previous hash is None + fix indentation
Merge branch 'develop' into 'fast synchronisation'
Merge pull request #366 from JahPowerBit/develop2

[#364] raise error when previous hash is None + fix indentation
Merge pull request #365 from Ignat99/sochainpy

[FIX] used tx_hash
[PIP] new versions in pip-requirements.txt
Merge pull request #367 from Ignat99/piprequirements

[PIP] new versions in pip-requirements.txt
finally fix travis
merge develop in fastsynchro