Echo Bot Commands

<variable>: Required
[variable]: Optional

Fun:
    .echo <statement>
        Echoes a given string
    .cascade <statement>
        Returns a multi-line string.
        Each line contains one more letter in the given statement.
    .morse <encode/decode> <message>
        Encode: Encodes a given message into Morse code
        Decode: Decodes a given message into readable text
        Encoded Morse uses / to separate letters, and // to separate words.
    .xkcd [number]
        Posts an XKCD strip.
        Defaults to a random number
        If a given number is greater than the most recent strip number, it will fall back to the greatest one.
    .roll/dice [sides]
        Rolls a die with a specific number of sides and returns the roll.
        Defaults to a six sided die.
        RPG dice syntax (d8, d20, etc.) can also be used.
    .reddit <subreddit>
        Posts the URL of a random image from a given subreddit.
            NOTE: though NSFW posts are rejected, they might still contain swearing/sensitive topics
    .meme
        Posts a random image from r/memes
        .reddit memes produces the same result.
            NOTE: though NSFW posts are rejected, they might still contain swearing/sensitive topics
    .8ball/magic8ball <question>
        Returns a response to a yes or no question.
        .ship <name1> [name2]
        Ships name1 with name2, if both are provided.
        Ships name1 with the name of the command user if name2 is not provided.
        ".ship name1 name2" has the same result as ".ship name2 name1".
    .rate <item>
        Rates an item from 0-10.

Utilities:
    .evaluate/eval <expression>
        Evaluates a math expression.
    .bitcoin/btc [amount]
        Calculates the price of a given amount of Bitcoin.
        Defaults to 1 Bitcoin.
    .tinyurl <url>
        Shortens a given URL
    .ping
        Displays ping time, uptime and memory usage for the bot.
    .wikipedia <search term>
        Displays the first two sentences of the Wikipedia summary article for a search term.
    .tag
        set <tag name> <variable>
            Creates a global variable that can be accessed by anyone later using the name of the variable.
            Will not be set if tag is already defined.
        view <tag name>
            Views the contents of a tag.

Administration:
    .checkadmin [id/tag]
        Checks if a given user is an administrator.
        Defaults to yourself.
    .addemoji <name> <url>
        Makes a new emoji with a given name and image URL
    .avatar [user mention]
        Displays the avatar for a mentioned user.
        Defaults to the person who used this command.