chore(CHANGELOG): add new version changes #121

Job	Run time
build (ubuntu-latest, 1.8, tmux_1_8)	31s
build (ubuntu-latest, 1.9, tmux_1_9)	34s
build (ubuntu-latest, 1.9a, tmux_1_9a)	24s
build (ubuntu-latest, 2.0, tmux_2_0)	22s
build (ubuntu-latest, 2.1, tmux_2_1)	19s
build (ubuntu-latest, 2.2, tmux_2_2)	14s
build (ubuntu-latest, 2.3, tmux_2_3)	15s
build (ubuntu-latest, 2.4, tmux_2_4)	24s
build (ubuntu-latest, 2.5, tmux_2_5)	27s
build (ubuntu-latest, 2.6, tmux_2_6)	13s
build (ubuntu-latest, 2.7, tmux_2_7)	13s
build (ubuntu-latest, 2.8, tmux_2_8)	23s
build (ubuntu-latest, 2.9, tmux_2_9)	16s
build (ubuntu-latest, 2.9a, tmux_2_9a)	16s
build (ubuntu-latest, 3.0, tmux_3_0)	16s
build (ubuntu-latest, 3.0a, tmux_3_0a)	23s
build (ubuntu-latest, 3.1, tmux_3_1)	27s
build (ubuntu-latest, 3.1a, tmux_3_1a)	16s
build (ubuntu-latest, 3.1b, tmux_3_1b)	20s
build (ubuntu-latest, 3.1c, tmux_3_1c)	19s
build (ubuntu-latest, 3.2, tmux_3_2)	24s
build (ubuntu-latest, 3.2a, tmux_3_2a)	21s
build (ubuntu-latest, 3.3, tmux_3_3)	20s
build (ubuntu-latest, 3.3a, tmux_3_3a)	19s
build (ubuntu-latest, 3.4, tmux_3_4)	25s
build (ubuntu-latest, master, tmux_X_X)	21s
	9m 2s

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