Fix #12806

Documentation improvement for `std.traits.isArray` to clarify whether
associative arrays are handled.

Fixes #12806
Reuse codepoint sets for identical character classes

These are very common and blowup memory usage at CTFE (that has no TLS
cache for that).
In any case it makes for slightly more compact memory footprint,
so a net gain regardless.
Merge pull request #2234 from DmitryOlshansky/regex-reuse-sets

std.regex - reuse codepoint sets for identical character classes
Merge pull request #2231 from economicmodeling/fix_12806

Fix #12806
std.logger

some more docu fixes

fatel -> fatal

changed the way of calling

some rework

some better comments and win32.mak fix

more documentation

trying to figure out why win32 fails

test before you commit

another try to work around windows files and processes

maybe this time

maybe this merges

update 1 mostly soenke

MultiLogger and Logger have names

more docu

unittest fix

some better comments and win32.mak fix

Conflicts:
	std/logger.d

antoher doc fix

less code dup and more log functions

docs are now generated

some more fixing

speedup

some threading

forgot some

better docu gen and more testing

two new LogLevel, most functions are now at least @trusted

Tracer functionality

fatal delegate

some phobos style fixes

another bug bites the dust

version disable enhancements

default global LogLevel set to LogLevel.all

logLevel compare bugfix

delete of dead code

tab to whitespace

bugfixes, reduandency removal, and docu

multilogger was logging to all it childs without checking there LogLevel in
relation to the LogLevel of the LoggerPayload.

Some constructors where redundant.

more examples and more documentation

some fixes

NullLogger and moduleName

wrong doc

I splitted the multi logger implementations out

loglevelF to loglevelf in order to make phobos style think writefln

document building

win makefile fixes

some optimizations thanks to @elendel-
some whitespace

some updates from the github logger project

* stdio- and filelogger now use a templatelogger base to reduce code

makefile fixes

makefile

fixed the unittest