Persistance (#53)

* added publish TX for backwards compat.

* lowered the prototick for faster block syncing

* print useragent on startup

* added createMultiRedeemScript for genesis block generation.

* building genesis block from scratch.

* implemented merkle tree.

* starting blockhain with generated genesis hash

* Fixed bug in unspent coin state.

* fixed broken tests after genesis block.

* removed log line.

* bumped version -> 0.34.0

pkg/util/fixed8_test.go

@@ -0,0 +1,16 @@
+package util
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNewFixed8(t *testing.T) {
+	values := []int{9000, 100000000, 5, 10945}
+
+	for _, val := range values {
+		assert.Equal(t, Fixed8(val*decimals), NewFixed8(val))
+		assert.Equal(t, int64(val), NewFixed8(val).Value())
+	}
+}