Improve byChunk, lockingTextWriter doc

Make byChunk, lockingTextWriter return opaque types (but keep those
types public for backward compatibility).
Add byChunk range example.
Also document that ByLine's primitives can throw StdioException.
Improve speed of to!string for integral types
Add comments for ranges that are no longer documented
lockingTextWriter should not be a @property
Make std.file.tempDir @trusted
Merge pull request #1452 from Kozzi11/toImplForIntegralTypes

Improve speed of to!string for integral types
Merge pull request #1448 from ntrel/stdio-range-doc

Improve byChunk, lockingTextWriter doc
std.string.indexOf with a start index

Basically indexOf with start index. This index is added to the found
index if the searched character was found.

std.string.indexOf(Char1,Char2)(with start index)

The same thing as with the single character indexOf.

fixed the auto-tester complains

save

another bug bites the dust

fix the startIdx problem

std.string.indexOf with a start index

Basically indexOf with start index. This index is added to the found
index if the searched character was found.

std.string.indexOf(Char1,Char2)(with start index)

The same thing as with the single character indexOf.

fixed the auto-tester complains

save

merge error

everything is nicer now

another fix

whitespace formatting

consistency

whitespace args

some more nitpicks fixes

spelling
Merge pull request #1301 from burner/indexOfIdx

std.string.indexOf with start index
Merge pull request #1468 from tom-tan/trusted-file-tempDir

Make std.file.tempDir @trusted