v.0.9.4

Added support for stripped variable values: a variable name now can be appended with symbol ^ to indicate that if it is text-like (text or Date), its value is to be injected as is, without being wrapped in single quotes:

$1^, $2^, etc... or ${varName^}

This is to allow for special-case variable formatting, like in the following examples:

// injecting "John" name without quotes:
query("...WHERE name LIKE '%$1^%'", "John");

// injecting value of property 'name' without quotes:
query("...WHERE name LIKE '%${name^}%'", {name: "John"});

// injecting a CSV-formatted string without quotes:
query("...WHERE id IN($1^)", pgp.as.csv([1,2,3,4])); 

Methods as.text(value, strip) and as.date(value, strip) have received new parameter-flag strip as they are the ones handling the formatting.

I also started working on the Learn by Example tutorial, to help first time users.

Other changes include:

• Improved tests and test instructions;
• New tests were added to cover stripped variable functionality;
• Documentation updates.