gba

Update project description in README.md #23

Job	Run time
build	5m 20s
test (arm_data_proc_register_shift)	13m 32s
test (arm_data_proc_immediate_shift)	9m 58s
test (arm_ldr_str_immediate_offset)	10m 4s
test (arm_b_bl)	15m 20s
test (arm_ldrh_strh)	11m 52s
test (arm_ldrsb_ldrsh)	11m 3s
test (arm_data_proc_immediate)	10m 57s
test (arm_ldr_str_register_offset)	12m 42s
test (arm_ldm_stm)	15m 31s
	1h 56m 19s

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