The tool API provides a convenient interface to selected methods in the
mmgen.tool module.  Type `pydoc3 mmgen.tool.api` for available methods and
call signatures.

## Examples

### Initialize:

	from mmgen.tool.api import tool_api
	tool = tool_api()

### Key/address generation:

	# List available coins:
	print(' '.join(tool.coins))

	# Initialize a coin/network pair:
	proto = tool.init_coin('btc','mainnet')

	# Print the available address types for current coin/network, along with a
	# description.  If tool.addrtype is unset, the first-listed will be used:
	tool.print_addrtypes()

	# Set the address type to P2PKH with compressed public key:
	tool.addrtype = 'compressed'

	# Skip user entropy gathering (not recommended)
	tool.usr_randchars = 0

	# Generate a random hex secret:
	hexsec = tool.randhex()

	# Generate the key and address:
	wif = tool.hex2wif(hexsec)
	addr = tool.wif2addr(wif)

	# Generate an LTC regtest Segwit key and address:
	proto = tool.init_coin('ltc','regtest')
	tool.addrtype = 'segwit'
	wif = tool.hex2wif(hexsec)
	addr = tool.wif2addr(wif)

	# Generate a random LTC regtest Bech32 key/address pair:
	tool.addrtype = 'bech32'
	wif,addr = tool.randpair()

### Mnemonic seed phrase generation:

	# Generate an MMGen native mnemonic seed phrase:
	mmgen_seed = tool.hex2mn(hexsec)

	# Generate a BIP39 mnemonic seed phrase:
	bip39_seed = tool.hex2mn(hexsec,fmt='bip39')

### Utility methods:

	# Reverse the hex string:
	hexsec_rev = tool.hexreverse(hexsec)

	# Get the HASH160 of the value:
	sec_hash160 = tool.hash160(hexsec)

	# Convert the value to base58 format:
	sec_b58 = tool.hextob58(hexsec)

	# Convert the value to base58 check format:
	sec_b58chk = tool.hextob58chk(hexsec)

	# Convert the byte specification '4G' to an integer:
	four_g = tool.bytespec('4G')

	# Convert the byte specification '4GB' to an integer:
	four_gb = tool.bytespec('4GB')