Dead key combos for Catalan L·, dotless j, and capital B with stroke have no Multi_key counterparts

The following three existing <dead_abovedot> sequences would be easy additions for <Multi_key> <period> ... sequences:

<dead_abovedot> <j>	: "ȷ"	U0237 # LATIN SMALL LETTER DOTLESS J
<dead_abovedot> <L>	: "Ŀ"	U013F # LATIN CAPITAL LETTER L WITH MIDDLE DOT
<dead_abovedot> <l>	: "ŀ"	U0140 # LATIN SMALL LETTER L WITH MIDDLE DOT

Furthermore, there exists <Multi_key> <slash> <b> : "ƀ" but no capital counterpart aside from the following <dead_stroke> sequence:

<dead_stroke> <B>	: "Ƀ"	U0243 # LATIN CAPITAL LETTER B WITH STROKE

As a side note, the following <Multi_key> sequences for characters with a comma below should probably be moved to their respective Unicode block:

<Multi_key> <semicolon> <S>	: "Ș"	U0218 # LATIN CAPITAL LETTER S WITH COMMA BELOW
<Multi_key> <S> <semicolon>	: "Ș"	U0218 # LATIN CAPITAL LETTER S WITH COMMA BELOW
...
<Multi_key> <semicolon> <s>	: "ș"	U0219 # LATIN SMALL LETTER S WITH COMMA BELOW
<Multi_key> <s> <semicolon>	: "ș"	U0219 # LATIN SMALL LETTER S WITH COMMA BELOW
...
<Multi_key> <semicolon> <T>	: "Ț"	U021A # LATIN CAPITAL LETTER T WITH COMMA BELOW
<Multi_key> <T> <semicolon>	: "Ț"	U021A # LATIN CAPITAL LETTER T WITH COMMA BELOW
...
<Multi_key> <semicolon> <t>	: "ț"	U021B # LATIN SMALL LETTER T WITH COMMA BELOW
<Multi_key> <t> <semicolon>	: "ț"	U021B # LATIN SMALL LETTER T WITH COMMA BELOW