Make MultiArray CTFE-able, workaround CTFE bug.
refactor TrieBuilder
tweak algorithm to actually fast-track zero-pages

Also significantly speed up replicateBits for single bit pattern case.
other tweaks for std.regex/ctRegex
added "dchar" for proper handling of UTF-8
Added a UTF symbol to munch() unittest
Fix completely trivial typo in std.process.execute documentation
Merge pull request #1699 from blackwhale/tweak-uni

Tweak unicode Trie generation speed
Merge pull request #1760 from francesco-cattoglio/issue_11713

added "dchar" for proper handling of UTF-8
Merge pull request #1763 from npadmana/typo_std_process_execute_doc

Fix completely trivial typo in std.process.execute documentation