Fix Issue 12556 - Add persistent byLine
Make byLineCopy support mutable line copies
Fix caching byLineCopy.front (oops)
Sanitize Appender constraints a bit.
Clarify when to use byLineCopy vs byLine
std.container.array.Array.stableLinearRemove aliases to wrong symbol

Removed the alias entirely because Array.linearRemove is not actually stable anyway
Indent parameters
Merge pull request #2077 from ntrel/byLineCopy

Fix Issue 12556 - Add persistent stdio.File.byLine
Merge pull request #2329 from JakobOvrum/array_remove

std.container.array.Array.stableLinearRemove aliases to wrong symbol
Merge pull request #2178 from monarchdodra/appenderStaticArray

Sanitize Appender constraints a bit.
Remained fix for issue 13098 - isValidFilename and alias this
[Refactoring] reduce overloads