In commit d4d185d29a266c349fdd6015829fdf3d6ff95418: Reset version number to 0.1.0

The use of local was removed as a side effect. The version script now lists some global symbols and that's all. But that's also the default. No symbols are actually hidden.

$ nm -D builddir/libbasu.so | grep ' T '
[...]
000000000005c69f T read_line
000000000006194c T safe_atod
0000000000061166 T safe_atoi
0000000000061812 T safe_atoi16
000000000006457a T strappend
0000000000064284 T strcmp_ptr
000000000006570a T strrep
0000000000065cbd T strv_clear
0000000000066237 T strv_consume
0000000000065d7b T strv_copy
000000000005f7f7 T undecchar
000000000005f838 T unhexchar
000000000005fa9f T unhexmem
000000000006778a T unichar_is_valid
0000000000068698 T unichar_iswide
00000000000678c6 T utf8_encoded_to_unichar
0000000000067ba7 T utf8_encoded_valid_unichar
0000000000067a32 T utf8_is_valid
0000000000068628 T utf8_prev_char
0000000000067d83 T version
[...]