Use QRegularExpression instead of QRegExp for SQLite's REGEXP operator

Replace the old QRegExp class by the newer QRegularExpression class in
the implementation of SQLite's REGEXP operator. This should fix some
problems with greediness and similar options.

See issue sqlitebrowser#2040.

Update version number to 3.11.2

The rebuilt macOS installer (v2) was generated from this tag.

Update version number to 3.11.1

We're using Qt 5.11.3 for the Win64 builds

The DB4S 3.11.0-beta3 Win32/64 & macOS binaries were created from

this commit.

The DB4S 3.11.0-beta2 Win32/64 & macOS binaries were created from thi…

…s commit.

The DB4S 3.11.0-beta1 Win32/64 & macOS binaries were

created from this commit.

This commit is what the DB4S 3.11.0-alpha1 Win32/64 & macOS binaries …

…were created from.

Update version numbers to 3.10.1