Define and implement the limit_order_update_operation. Still needs
testing.

Some major facepalms in here... haha! but overall, it's looking good.

Add logic to match an updated limit order if the price is changed to be
higher than the previous top-of-book price.

I believe this completes #1604

Add dust check to limit order update logic, and test

Updating an order's expiration must make it expire later than before,
not the same or sooner.

I pulled this out of a2192ec because I
needed it separated from the rest of that commit.

Guard against the comittee setting fees for the operation which is not
yet defined.

Merge develop branch into hardfork branch

Merge release branch back into develop branch

Merge develop branch into hardfork branch

`rewind` is reserved
prefix increment `dropped_count, i, next_block_num` for efficiency
increment from method call `fetch_by_number()`  could cause undefined behavior
parenthesis added for explicit operator precedence 
order of operations clarified
max 1 nested break

Fix code smells

Update default values of market history plugin options

Since ES version 8, cannot specify a type when using the Search API
or the Count API.

since it tests almost nothing.

Use ElasticSearch 8.5.3 in Github Actions, remove Ubuntu 18

and stop using extra swap file

Implement Order-Sends-Take-Profit-Order feature

By using the block_time field in operation_history_object.

Improve performance of account history wallet APIs by using the block_time field in operation_history_object

Merge develop branch into hardfork branch

Update dependency versions used in Github Actions

Merge develop branch into hardfork branch

Fix a comment in a test case

Fix a test case

Fix a comment in a test case

Fix a test case about updating limit orders