Swap improvements #1030

Job	Run time
Compilation for NanoS, X, S+, and Stax (nanos, $NANOS_SDK)	2m 23s
Compilation for NanoS, X, S+, and Stax (nanox, $NANOX_SDK)	1m 45s
Compilation for NanoS, X, S+, and Stax (nanosp, $NANOSP_SDK)	1m 47s
Compilation for NanoS, X, S+, and Stax (stax, $STAX_SDK)	2m 2s
Tests (nanos)	8m 12s
Tests (nanox)	8m 11s
Tests (nanosp)	8m 8s
Tests on mainnet (nanos)	28s
Tests with the Python library and legacy Bitcoin app	42s
Unit test	3m 22s
Tests (stax)	8m 16s
Tests on mainnet (nanox)	26s
Tests on mainnet (nanosp)	25s
Tests on mainnet (stax)	43s
Tests for rust client library	10m 28s
Tests with the JS library	1m 17s
	58m 35s

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