port: allow one MAX_NR_HID_HOST_CONNECTIONS and MAX_NR_HIDS_CLIENTS for HID(S) host demos
ports: add link to documentation in btstack_config.h
btstack_config: use official terms for l2cap channel modes - ENABLE_L2CAP_LE_CREDIT_BASED_FLOW_CONTROL_MODE
port: copy edit port readmes, archive ios port
hci_transport: extract convenience function declaration for h4, h5, em9304_spi, and usb into separate hci_transport_{type}.h
hci_dump: apollo2 port
apollo2-em9304: fix READMe for running make
config: add ENABLE_PRINTF_HEXDUMP
config: sort defines alphabetically
update python scripts to python3
examples: renamed le_counter to gatt_counter and le_streamer to le_streamer_server to indicate suppport for GATT over BR/EDR
apollo2-em9304: use Makefile.inc
add le_data_channel examples to most ports
apollo2-em9304: add TODO list
apollo2-em9304: remove Classic config options
apollo2-em9304: disable log_info
apollo2-em9304: add 'up and running'
apollo2-em9304: create examples based on template, README.md
apollo2-em9304: use System Timer (STIMER) for run loop
apollo2-em9304: port for em9304 shield on apollo2 evb