Build

bump version to 0.3.0-alpha.10 #17

Job	Run time
build_feature_esplora (linux)	2m 10s
build_all_features (linux)	2m 21s
build_feature_esplora (windows)	4m 5s
build_feature_electrum (linux)	2m 14s
build_all_features (windows)	5m 11s
build_feature_electrum (windows)	5m 23s
build_no_default_features (linux)	1m 59s
build_feature_esplora (macos)	2m 9s
build_all_features (macos)	2m 35s
build_feature_electrum (macos)	2m 47s
build_no_default_features (windows)	4m 56s
build_no_default_features (macos)	1m 56s
	37m 46s

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