Substreams

* tiny substreams that accumulates a list of 'coinbase' addresses and how many blocks they did.

Mostly useful as a smoketest for substreams.

* Now with correct sol-spl-token initialBlock to 31313760
* New modules
- map_mints
- store_mints
- map_accounts
- store_accounts
- map_transfers
- store_mint_native_volumes
- store_mint_decimal_volumes

What's Changed
* Poll cb and poll first dict, error handling by MichaelC1999 in https://github.com/messari/substreams-python/pull/4
* Refactor and condense poll function by MichaelC1999 in https://github.com/messari/substreams-python/pull/5
* Map module support and deprecate store logic, docs by MichaelC1999 in https://github.com/messari/substreams-python/pull/6
* Return type refactor by MichaelC1999 in https://github.com/messari/substreams-python/pull/7
* Return filter func and csv type by MichaelC1999 in https://github.com/messari/substreams-python/pull/8


**Full Changelog**: https://github.com/messari/substreams-python/compare/v0.0.5...v0.0.8

What's Changed
* Non protobuf module support by MichaelC1999 in https://github.com/messari/substreams-python/pull/1
* Support map modules and made initial snapshot optional by this-username-is-taken in https://github.com/messari/substreams-python/pull/2
* generalized pb2 module path by ncentola in https://github.com/messari/substreams-python/pull/3

New Contributors
* MichaelC1999 made their first contribution in https://github.com/messari/substreams-python/pull/1
* this-username-is-taken made their first contribution in https://github.com/messari/substreams-python/pull/2
* ncentola made their first contribution in https://github.com/messari/substreams-python/pull/3

**Full Changelog**: https://github.com/messari/substreams-python/compare/v0.0.2...v0.0.5